Preheat oven to 425 degrees.
Combine onion, water, ketchup, brown sugar, Worcestershire, hot sauce, garlic lemon rind and juice in a saucepan. Simmer for 5 minutes.
Wash and dry chickens. Cut into quarters. Brush pieces on both sides with sauce.
Arrange in greased baking pan skin side down. Bake 20 minutes. Reduce heat to 375 degrees.
Turn chicken pieces over. Brush with remaining sauce. Bake 20 minutes or until done and tender.