Season chicken with salt, pepper and garlic powder.: The first aromas you should notice are salt drawing out the meat juices and the faint scent of garlic powder sitting on the surface, which helps the crust form when searing. Seasoning deeply at the start ensures layers of flavor throughout, not just on the outside. Common mistake to avoid here is under seasoning, which results in flat tasting meat; be generous but measured, and pat the seasoning gently into the surface so it adheres.
Press the Sauté function (Normal setting) on the Instant Pot (I used a 6 Quart DUO) and add the olive oil to the pot.: As the pot warms you will hear a soft hum and then a light shimmer from the oil, indicating it is ready for searing. Warming the oil properly prevents sticking and allows immediate browning. A pitfall is adding meat to oil that is not hot enough, which causes sticking instead of a golden sear.
Place chicken in the Instant Pot and allow to sear on each side for 2 minutes, or until golden brown. This helps to seal in the juices and keep it tender. (You may have to work in batches depending on the size and amount of chicken you are using). Once browned, remove from Instant Pot and set aside.: You should notice a satisfying sizzle as the chicken hits the hot oil, and small brown bits forming on the surface. The visual cue is a golden brown crust, not blackness, which indicates you are building flavor without burning. If you crowd the pot, the meat will steam rather than sear, so work in batches when necessary.
Melt butter in Instant Pot and stir in the onions and garlic. Add lemon juice to deglaze pan. Cook for 1 minute then add Italian seasoning, lemon zest, and chicken broth.: When you lift the pieces, they should release easily and show even browning. Setting them aside keeps them from overcooking while you build the sauce. A common error is leaving the meat in the pot which can over cook it during the sauce stage, drying it out.
Place the chicken back into the Instant Pot, lock the lid, and turn the valve to SEAL.: The butter will foam and then settle, releasing a nutty aroma, and the onion will soften and become translucent. The garlic should turn fragrant quickly but not brown; watch closely as it burns easily. Stirring helps distribute the flavors and lift the browned bits from the pot bottom, which are crucial for depth.
Select the Manual (older model) or Pressure Cook (newer model) button and adjust the timer to 7 minutes.: As you pour the lemon juice you will hear a hissing sound as it hits the hot surface, and the fond will begin to dissolve into the liquid. This step captures concentrated flavor and ensures none of the browned bits go to waste. Failing to deglaze can trigger a burn notice on some Instant Pot models and leave bitter stuck bits.
It will take about 5-10 minutes to come to pressure and start counting down.: After a minute the aromatics will smell melded, and adding the Italian seasoning and zest intensifies the herbal and citrus notes. The broth softens the intensity and forms the base of your sauce. If you add the liquid too cold it can temporarily lower the pot temperature; that is okay, but give it a moment to come back up before proceeding.
When done, allow to naturally release for 2-3 minutes then using a long spoon push the valve to RELEASE, then remove your Instant Pot lid.: When you nestle the chicken back into the cooking liquid you will see the sauce come up around the pieces. Locking the lid and sealing traps steam which tenderizes the meat. Make sure the valve is fully set to SEAL, as an incomplete seal can prevent proper pressure build up and undercook the meat.
(If you want to thicken the sauce - make a cornstarch slurry using 1 teaspoon of cornstarch whisked with 2 teaspoons cold water and stir in the Instant Pot. Press SAUTE and allow to bubble and thicken up.): During this stage the pot will begin building pressure, compressing heat so the meat cooks evenly and quickly. The specified time is calibrated for boneless thighs; if your pieces are larger or bone in, adjust accordingly. Overcooking at this stage will make the chicken dry, so stick to the recommended time for tender results.
Sprinkle with chopped parsley and serve hot with your favorite sides. Spoon sauce over chicken and garnish with lemon slices, if desired.: You will notice the float valve pop up and a soft increase in steam noise as the pot seals. This is normal and part of the pressure build up. Avoid opening the lid during this period, as releasing pressure prematurely will interrupt the even cooking process and can affect texture.
When done, allow to naturally release for 2 to 3 minutes then using a long spoon push the valve to RELEASE, then remove your Instant Pot lid.: The aroma intensifies as pressure releases, and the meat will relax slightly, which helps juiciness. A short natural release helps finish the cooking gently, while a quick release prevents overcooking. Be cautious of hot steam when you move the valve, keep hands and face clear.
If you want to thicken the sauce - make a cornstarch slurry using 1 teaspoon of cornstarch whisked with 2 teaspoons cold water and stir in the Instant Pot. Press SAUTE and allow to bubble and thicken up.: When you stir the slurry in, you will see the sauce change from thin to glossy and slightly cling to the spoon, a visual signal it is ready. Thickening concentrates flavor and gives a pleasing coating on the chicken . Add slurry gradually, as too much can make the sauce pasty and overly thick.
Sprinkle with chopped parsley and serve hot with your favorite sides.: Fresh parsley brightens both aroma and color, and spooning the sauce over warm chicken ties everything together. Serve immediately for the best texture. A common mistake is letting the dish sit too long before serving, which cools the sauce and dulls the aromatic lift.