01 - Preheat oven to 400°F and lightly grease a baking dish with cooking spray or oil.
02 - Heat 1 tablespoon olive oil in a skillet over medium heat. Sauté minced garlic for 30 seconds until fragrant, then add chopped spinach. Cook for 2 minutes until wilted. Remove from heat and allow to cool slightly.
03 - Combine sautéed spinach, crumbled feta cheese, softened cream cheese, chopped sun-dried tomatoes, fresh parsley, and dried oregano in a mixing bowl. Stir thoroughly until all ingredients are evenly distributed.
04 - Pat chicken breasts dry with paper towels. Using a sharp knife, cut a horizontal pocket into the side of each breast, taking care not to slice completely through. Open gently to create space for stuffing.
05 - Season both sides of each chicken breast with salt and black pepper. Generously fill each pocket with the spinach-feta mixture. Secure openings with toothpicks if necessary to prevent filling from escaping during cooking.
06 - Place stuffed chicken breasts in the prepared baking dish. Drizzle remaining 1 tablespoon olive oil evenly over the tops and sprinkle with paprika for color and flavor.
07 - Bake for 25–30 minutes until chicken is completely cooked through and juices run clear. Internal temperature should reach 165°F when measured with a meat thermometer.
08 - Remove from oven and let chicken rest for 5 minutes to allow juices to redistribute. Remove toothpicks before plating and serving.