Cook and drain pasta as directed on package; cover to keep warm.
Meanwhile, in 12-inch skillet, cook bacon and onion over medium heat until bacon is crisp, stirring frequently. Add ground beef. Cook 8 to 10 minutes, stirring occasionally, until beef is thoroughly cooked; drain.
Stir in olives, tomatoes, tomato sauce, oregano and salt. Reduce heat to medium-low. Simmer 10 minutes, stirring occasionally, until thoroughly heated. Serve over cooked pasta; sprinkle cheese over top.