Pat your chicken pieces dry with paper towels—this is crucial for getting a real sear. Heat 2 tbsp olive oil in a large skillet over medium-high heat until it shimmers. Don't skip this step or your chicken won't brown properly. Season chicken with salt and pepper, then add to the hot pan in a single layer. Let it sit undisturbed for 3-4 minutes.
Flip each piece and cook another 3-4 minutes until golden on both sides. You're not cooking it through yet—just building color and flavor. Remove the chicken to a clean plate and set aside. You'll hear it sizzle aggressively when it first hits the oil, which is exactly what you want.
In the same pan, add diced onion and cook for 2-3 minutes until softened and fragrant. Add minced garlic and cook for another 30 seconds. Stir in oregano and thyme, letting them bloom in the oil for about 10 seconds—you'll smell that herby warmth immediately. This flavor foundation is what makes the difference.
Pour in the chicken broth and use a wooden spoon to scrape up all those browned bits stuck to the bottom of the pan. This is called deglazing, and it's where half your flavor lives. Add the lemon zest at this point too. Bring the broth to a gentle simmer.
Add the orzo pasta directly to the simmering broth and stir occasionally. Cook for about 9-11 minutes until the pasta is almost tender but still has a slight bite. The pasta will absorb the broth as it cooks, which is exactly what you want here. Return the seared chicken to the pan and stir to combine everything evenly.
Add frozen peas and cook for another 2-3 minutes until heated through. When your kitchen smells like warm lemon, garlic, and herbs all mingling together, you're almost done. Taste the sauce and adjust seasoning if needed. Stir in the Parmesan cheese and fresh parsley just before serving.
Let the pan sit off heat for 1-2 minutes so the cheese melts into the pasta and sauce. This resting period helps everything come together as one cohesive dish instead of separate components. I personally love how the residual heat brings all the flavors into harmony without overcooking anything.