COOK bacon in large skillet on medium heat until crisp, turning frequently. Drain bacon, reserving drippings in skillet. Cool.
ADD green pepper and onion to drippings in skillet; cook 3 minutes or until crisp-tender, stirring occasionally. Reduce heat to low.
STIR in pork and beans, Northern beans, barbecue sauce and sugar; simmer 10 minutes, stirring occasionally. Sprinkle with crumbled bacon.