01 - Preheat the oven to 400°F. Line a baking dish with parchment paper or lightly grease it.
02 - Sauté spinach in a skillet over medium heat for 2–3 minutes until wilted. Remove from heat, let cool slightly, then squeeze out excess moisture. In a bowl, combine spinach with feta, cream cheese, garlic, dill, parsley, lemon zest, salt, and pepper. Mix thoroughly.
03 - Pat chicken breasts dry. Using a sharp knife, create a horizontal pocket in the thickest side of each breast, careful not to cut through completely.
04 - Fill each chicken breast evenly with the spinach-feta mixture. Secure openings with toothpicks if necessary.
05 - Brush each stuffed breast with olive oil. Season all sides with paprika, salt, and black pepper.
06 - Place the breasts in the prepared baking dish. Bake for 25–30 minutes, or until internal temperature reaches 165°F and juices run clear.
07 - Allow chicken to rest for 5 minutes before removing toothpicks and serving.