In a skillet, melt butter over medium-high heat. Saute onion, parsley, and basil until onion is tender. Add zucchini and continue to cook for 2 minutes. Remove from heat; stir in bread crumbs, egg, cheese, salt and pepper.
Carefully loosen the skin of the chicken on one side to form a pocket. Stuff each breast with zucchini mixture. Bake in preheated oven for 50 to 60 minutes or until chicken is done. Makes 4 servings. Enjoy!