Steps
1. Preheat your oven to 375°F (190°C).
2. In a skillet, heat olive oil over medium heat and sauté minced garlic until fragrant.
3. Add chopped spinach and cook until wilted, about 2-3 minutes.
4. Remove from heat and stir in feta cheese, oregano, salt, pepper, and lemon juice.
5. Carefully slice a pocket into the chicken breast and stuff it with the spinach-feta mixture.
6. Place the stuffed chicken breast in a baking dish and season with additional salt and pepper.
7. Bake in the preheated oven for 25-30 minutes, or until the chicken is cooked through and juices run clear.
8. Let rest for 5 minutes before slicing and serving.