Preheat your oven to 400°F (200°C).
Season the chicken pieces generously with salt and pepper.
Heat the olive oil in a large oven-safe skillet over medium-high heat. Add the chicken and sear for 2-3 minutes per side, until lightly browned. Remove the chicken from the skillet and set aside.
Add the chopped onion to the same skillet and sauté for 3-4 minutes until softened and translucent. Add the minced garlic and cook for another minute until fragrant.
Stir in the orzo, dried oregano, and dried thyme. Toast the orzo for about 1 minute, stirring constantly.
Pour in the chicken broth and white wine (if using). Bring the mixture to a simmer, scraping up any browned bits from the bottom of the pan.
Return the seared chicken to the skillet, nestling the pieces into the orzo mixture. Ensure everything is mostly submerged.
Cover the skillet with a lid or foil and transfer it to the preheated oven. Bake for 15-20 minutes, or until the orzo is tender and most of the liquid has been absorbed.
Remove the skillet from the oven. Stir in the lemon zest, lemon juice, and fresh parsley. Taste and adjust seasoning with salt and pepper if needed.
Let the dish rest for 5 minutes before serving. Garnish with additional fresh parsley and grated Parmesan cheese, if desired.