allrecipes.co.uk/recipes/tag-6591/feta-stuffed-chicken-breast.aspx Serve colourful, flavour-packed stuffed peppers for a light Mediterranean-style supper. Fill each pocket with 1/4 cup spinach mixture. Toss together the tomatoes, feta cheese, olives, garlic and vinegar. Cut a pocket in each chicken breast by slicing horizontally almost to the bone. Place chicken in a 13x9-in. Choose from a range of fillings, including meat and vegetarian options. baking dish. Preheat the oven to 220°C/gas mark 7. In a small bowl, whisk the lemon juice, basil, oregano, salt, garlic powder, pepper and remaining oil; brush over chicken.