Melt butter or margarine in a large saucepan. Add garlic, pepper, chili powder, lemon juice, lemon rind and Worcestershire sauce. Mix well. Place chicken in a lightly greased 9x13 inch baking dish. Pour butter/margarine mixture over chicken, cover dish and bake in the preheated oven for 45 minutes or until thick parts of chicken are tender and juices run clear.