01 - Set the oven to 400°F and prepare a baking dish by lining with parchment paper or lightly greasing it.
02 - In a skillet over medium heat, sauté the spinach for 2 to 3 minutes until wilted, then remove from heat and let cool. Squeeze out excess moisture.
03 - Combine the sautéed spinach with feta, cream cheese, garlic, dill, parsley, lemon zest, salt, and pepper. Mix thoroughly to create the filling.
04 - Pat the chicken breasts dry. Using a sharp knife, cut a horizontal pocket into the thickest side of each breast without cutting through completely.
05 - Fill each chicken pocket evenly with the spinach-feta mixture. Secure openings with toothpicks if needed.
06 - Brush the stuffed chicken breasts with olive oil, then season both sides with paprika, salt, and black pepper.
07 - Place the stuffed breasts in the baking dish and bake for 25 to 30 minutes until the internal temperature reaches 165°F and juices run clear.
08 - Let the chicken rest for 5 minutes before removing toothpicks and serving.