Creating Greek Chicken with Lemon and Feta is straightforward if you follow these simple steps:

1. Prepare Marinade: In a bowl, whisk together olive oil, lemon juice, lemon zest, minced garlic, oregano, salt, and black pepper.
2. Marinate Chicken: Place the chicken breasts in a resealable plastic bag or shallow dish. Pour the marinade over the chicken, ensuring it is evenly coated. Seal the bag or cover the dish and refrigerate for at least 30 minutes (or up to 2 hours for more flavor).
3. Preheat Oven: If you plan to bake, preheat your oven to 400°F (200°C). If grilling, prepare your grill.
4. Prepare Baking Dish: If baking, lightly grease a baking dish with cooking spray or olive oil.
5. Arrange Chicken: Remove the chicken from the marinade and place it in the baking dish or on the grill. Reserve the marinade for later use.
6. Bake/Grill Chicken: Bake in the preheated oven for 25-30 minutes or grill for 5-7 minutes per side, until the chicken is cooked through and reaches an internal temperature of 165°F (75°C).
7. Add Feta: About 5 minutes before the chicken is done, sprinkle crumbled feta cheese over the top. This allows the cheese to melt slightly.
8. Serve: Once cooked, remove the chicken from the oven or grill. Let it rest for a few minutes before slicing.
9. Garnish: Sprinkle with chopped parsley and add lemon slices for garnish.
10. Drizzle Marinade: Drizzle any remaining marinade over the chicken before serving for extra flavor.

These steps will guide you in creating this incredible dish effortlessly.