Cook spaghetti according to directions on the box to al dente. Drain, rinse in cool water.
When completely cooled transfer the spaghetti to a large bowl. Add the Italian dressing, Salad Supreme, and the parmesan cheese, stir until evenly distributed.
Add the tomatoes, red bell pepper, onion, cucumber, black olives and the pepperoni. Toss until all ingredients are coated.