Marinate the chicken with salt, black pepper, garlic powder, oregano, thyme, and red pepper flakes for 10-15 minutes.
Toast the orzo in a large skillet with olive oil over medium-high heat for 1-2 minutes.
Sear the marinated chicken in the same skillet for 5-7 minutes until browned and cooked through.
Add chicken broth to the skillet, bring to a boil, then reduce heat and simmer for 10 minutes until orzo is tender.
Stir in cherry tomatoes, spinach, cooked chicken, lemon juice, and Parmesan cheese, mixing well.
Cook for an additional 2-3 minutes until spinach wilts and everything is heated through. Garnish with fresh parsley before serving.