Preheat oven to 400 degrees and line a rimmed baking sheet with parchment paper or silpat liner.: You will notice the kitchen warming and the oven light glowing as it approaches temperature, which is important for immediate browning when the tray hits the hot air. Preheating to 400 degrees ensures the exterior of the chicken starts to crisp while the interior cooks slowly enough to stay moist. If the oven is not fully preheated, the meat can release juices and steam instead of forming a crust, leading to soggy skin. A common error is skipping the lining which makes cleanup harder and can cause sticking; parchment or a silpat liner prevents this and promotes even roasting.
In a large bowl add all ingredients and stir to evenly coat.: As you toss everything with the olive oil and spices, you should smell the herbal aroma of oregano and smoked paprika , and the oil will give the mixture a glossy sheen. Coating helps heat transfer and encourages the spices to adhere so each piece browns uniformly, and it also helps the lemon zest cling to the components. If pieces are not well coated, you may get uneven browning and bland bites; be sure to scrape the bottom of the bowl so small herb bits are distributed evenly. Overcrowding the bowl while tossing can make a mess, so use a large bowl for freedom of movement.
Place the chicken, potatoes and sausage out onto your prepared baking sheet.: Lay the components skin side up for the chicken and space them so air circulates; you should be able to see pockets of space between pieces. Proper spacing produces crisp edges and prevents steaming, which is crucial for golden skin and roasted potato surfaces. Visually, you want exposed surfaces that will brown, and the sizzling will begin as the tray hits the hot oven. A frequent misstep is clustering everything tightly which results in pale, soft skins and underroasted potatoes, so arrange with intention and give each piece room to breathe.
Bake for about 1 hour or until the chicken is fully cooked (the internal temperature should be 160 degrees) and the potatoes are soft.: During the bake you will hear gentle crackles and maybe some pops as rendered fat meets the hot pan, and the aroma will deepen to savory, smoky notes. Look for golden brown skin and slightly blistered potato edges as visual cues. The internal target of 160 degrees is essential for safety and juiciness, and using an instant read thermometer prevents overcooking which dries the meat. A common pitfall is relying solely on time, since oven variances can change doneness; always check the internal temperature and test a potato with a fork for tenderness.
Note: I find by chunking my sausage larger it is less likely to get dried out. In the picture I cut it a small for my liking and it was a bit more crispy. If you like your sausage crispy simply cut it smaller.: The size of the sausage pieces directly affects their texture after roasting, and larger chunks retain moisture and develop a satisfying snap without becoming brittle. If you prefer extra crispness, slicing smaller will expose more surface area and create crunchy edges, which can be delicious but may dry the center. When adjusting sizes, keep an eye on the tray as smaller pieces may finish sooner and need to be removed earlier to avoid over crisping. Avoid cutting everything too small if you want juicier bites, and consider removing smaller sausage pieces early if you opt for a crisper finish.