In a 6-quart stockpot, cook bacon over medium heat, stirring occasionally, until crisp, 6-8 minutes. Remove with a slotted spoon; drain on paper towels. Discard drippings. , In the same pot, cook ground beef and onion over medium heat until meat is no longer pink, 6-8 minutes; crumble meat; drain. Add the next 10 ingredients; bring to a boil. Reduce heat; simmer, covered, until pasta is al dente, stirring occasionally, about 10 minutes. , Stir in 1 cup cheese, pickle and bacon; cook and stir until cheese is melted. Serve with remaining cheese and, if desired, tomatoes, lettuce, pickles and red onions.