Creating Greek Chicken Casserole is easy when you follow these simple steps:

1. Preheat your oven to 375°F (190°C).
2. Prepare the baking dish: Grease a large casserole dish with olive oil or cooking spray.
3. Season the chicken: In a bowl, drizzle olive oil over the chicken breasts. Add lemon juice, lemon zest, oregano, thyme, salt, and pepper. Toss to coat evenly.
4. Arrange the chicken: Place the seasoned chicken breasts in the bottom of the greased casserole dish.
5. Add vegetables: Scatter the cherry tomatoes, red onion, bell peppers, zucchini, and minced garlic over the chicken.
6. Top with cheese and olives: Sprinkle the crumbled feta cheese and sliced kalamata olives over the vegetables.
7. Cover the dish: Use aluminum foil to cover the casserole dish, sealing it well.
8. Bake: Place the covered casserole in the preheated oven and bake for 30 minutes.
9. Uncover and cook: Remove the foil and continue baking for an additional 10-15 minutes, or until the chicken is cooked through and the vegetables are tender.
10. Garnish: Remove from the oven and let it cool for about 5-10 minutes. Garnish with fresh parsley before serving.

These steps will guide you through creating your Greek Chicken Casserole effortlessly. Enjoy the delightful aromas filling your kitchen as it bakes!