Preheat oven to 350°.
Place chicken on an ungreased baking sheet; spoon 1/3 cup barbecue sauce over chicken. Bake at 350° for 40 minutes or until chicken is done. Cool; chop and set aside.
Spread remaining 1/3 cup sauce evenly over pizza crust, leaving a 1-inch border. Top crust evenly with chicken and remaining ingredients.
Bake at 350° for 15 to 20 minutes or until cheese melts. Cut into 8 slices.