Heat olive oil in a Dutch oven. Add chicken to the pot and cook over medium-high heat until browned. Add garlic to the pot and cook for 30 seconds. Add tomato paste and sun-dried tomatoes; cook, stirring constantly.: As the oil warms you will see it shimmer and smell its faint fruity scent, which signals it is ready. This step prepares the pan surface so the chicken can sear properly rather than stick, creating flavorful browned bits on the bottom called fond. Use medium high heat to get a quick sear, listening for a gentle sizzle as the chicken hits the pan. A common pitfall is using oil that is too cool, resulting in pale rather than golden pieces, so give the oil a few moments to heat until it moves easily in the pan.
Stir in chicken broth, heavy cream, basil, salt, Italian seasoning, onion powder, garlic powder, and crushed red pepper flakes; bring to a boil over medium heat.: When the chicken hits the hot oil it should sizzle immediately; this sound means moisture is escaping and color is developing. Watch for edges to turn lightly golden while the centers remain slightly opaque, usually a few minutes per side for bite sized pieces. Browning improves flavor by creating caramelized notes, which enrich the broth later. Avoid crowding the pot, which causes steaming and prevents browning; if pieces are too close, cook in batches for best results.
Add orzo to the pan and simmer for 10 to 15 minutes, until the pasta is tender.: The moment you add the minced garlic the kitchen will fill with a toasty aromatic, signaling that the aromatics are releasing their oils. Keep the heat moderate; this brief cook gently sweetens the garlic and integrates its flavor into the pan. Overcooking here is easy, and burnt garlic will introduce bitterness, so stir constantly and remove from direct heat if it starts to darken too quickly.
Reduce to low heat and add spinach, cream cheese, and Parmesan cheese; cook for 10 to 15 minutes, stirring often, until cream cheese and Parmesan are melted.: You will notice the paste darken slightly and the tomatoes soften as they release concentrated tomato flavor, creating a deeper, almost caramelized base. Stirring prevents sticking and helps the paste disperse so the broth later gains a uniform tomato character. This step builds umami and balances the creaminess to come, so take the extra minute to develop those flavors. If the paste chars, reduce heat and scrape the pan gently to avoid bitter notes.
Stir in chicken broth, heavy cream, basil, salt, Italian seasoning, onion powder, garlic powder, and crushed red pepper flakes; bring to a boil over medium heat: As you add the liquids and seasonings the pot will steam and the aromas will broaden, with herb and cream notes coming forward. Bringing the mixture to a boil briefly helps meld the flavors and ensures the orzo will cook properly later. Keep an eye on the edge of the pot where small bubbles form, and stir to combine everything evenly. Watch for boiling over, and reduce heat if the foam rises too high.
Add orzo to the pan and simmer for 10 to 15 minutes, until the pasta is tender: As the orzo simmers it will absorb liquid and swell, releasing a comforting starch that slightly thickens the broth. You will notice the soup transform visually as the pasta becomes plump and tender; taste a piece around 10 minutes to judge doneness. Stir occasionally to prevent the orzo from sticking to the bottom, and avoid overcooking which leads to a mushy texture. If the broth reduces too much, add a splash of broth to keep the ideal consistency.
Reduce to low heat and add spinach, cream cheese, and Parmesan cheese; cook for 10 to 15 minutes, stirring often, until cream cheese and Parmesan are melted: When you add the spinach it will wilt quickly, turning from bright to deep green and releasing a fresh vegetal scent. As the cheeses melt they blend into the broth, creating a silky, unified texture that coats the orzo and chicken . Stirring often helps the cream cheese soften and prevents graininess from the Parmesan. If the heat is too high the dairy may separate, so keep the pot gentle and low; if you see any curdling reduce the heat and stir vigorously until smooth.