Combine ground beef, barbecue sauce, salt, pepper, bread crumbs, egg, green onions and Worcestershire in bowl. Form into 18 meatballs.
Quarter and separate red onion; cut 1 small sweet green pepper into 1-inch pieces. Thread 3 meatballs, onion and pepper pieces onto each of 6 metal skewers. Brush with barbecue sauce. Broil 3 to 4 minutes per side, brushing with more sauce. Serve with white rice.