Creating the Greek Chicken Casserole is simple and straightforward. Follow these steps to achieve the best results:

1. Preheat the Oven: Start by preheating your oven to 375°F (190°C).
2. Prepare the Chicken: In a large bowl, combine the chicken breasts, olive oil, lemon juice, garlic, oregano, thyme, salt, and pepper. Toss until the chicken is evenly coated.
3. Layer the Vegetables: In a baking dish, spread the cherry tomatoes, green bell pepper, red onion, and olives evenly across the bottom.
4. Add the Chicken: Place the marinated chicken breasts on top of the vegetable layer.
5. Top with Feta: Crumble the feta cheese over the chicken and vegetables.
6. Cover and Bake: Cover the baking dish with aluminum foil and place it in the preheated oven. Bake for 30 minutes.
7. Uncover and Finish Baking: After 30 minutes, remove the foil and continue to bake for an additional 15 minutes, or until the chicken is cooked through and the cheese is slightly golden.
8. Garnish: Once done, remove from the oven and let it sit for a few minutes. Garnish with fresh parsley if desired.
9. Serve: Slice the chicken and serve it warm, ensuring each portion has a generous amount of vegetables and feta.

These steps will guide you in creating this incredible casserole effortlessly, leaving your kitchen filled with delightful aromas!