01 - Preheat the oven to 400°F. Line a baking dish with parchment paper or lightly grease it.
02 - Heat 1 tablespoon olive oil in a skillet over medium heat. Add minced garlic and cook for 30 seconds until fragrant. Add chopped spinach and sauté until wilted, about 2 to 3 minutes. Remove from heat and let cool slightly.
03 - In a bowl, mix the sautéed spinach, crumbled feta cheese, softened cream cheese, chopped parsley, dried oregano, ground nutmeg, salt, and black pepper until well blended.
04 - Using a sharp knife, carefully cut a horizontal pocket into each chicken breast without slicing all the way through.
05 - Brush the outside of the chicken breasts with 1 tablespoon olive oil, then season evenly with salt, black pepper, and paprika.
06 - Fill each chicken breast pocket with the spinach-feta mixture. Secure with toothpicks if needed.
07 - Arrange the stuffed breasts in the prepared baking dish. Bake for 25 to 30 minutes until cooked through and juices run clear. Internal temperature should reach 165°F.
08 - Remove toothpicks and serve immediately while hot.