Place chicken in a large pan. Heat the Worcestershire sauce and barbecue sauce over medium-high heat, and mix in onion, hot pepper sauce, garlic powder, black pepper, Worcestershire sauce, garlic powder and allspice. Mix well and pour over chicken in pan.
Place bread in the pan. Brush cornmeal onto bread. Sprinkle with salt, pepper, allspice and cayenne pepper. Cover, and turn to coat.
Bake uncovered at 375 degrees F (190 degrees C) for 45 minutes.