Preheat oven to 400º F. Rinse, drain and chop the sauerkraut. Place pizza crust on greased baking sheet. Spoon pizza sauce over crust, then arrange sauerkraut and sausage slices over sauce. Sprinkle with onions, green peppers, and olives. Top with grated cheese. Bake for 20 minutes, or until cheese is melted and edges are browned.