Heat oven to 350 degrees.
In large skillet, cook ground beef, onions and bell pepper 7 to 9 minutes or until meat is browned and vegetables are crisp-tender; drain. Add noodles, Italian seasoning, pepperoni, olives, tomato sauce and tomato paste; mix well. Fold in 1 cup cheese. Pour mixture into ungreased 2 quart baking dish. Top with remaining 1 cup cheese.
Bake for 25 -35 minutes or until thoroughly heated and cheese begins to brown. Sprinkle with parsley.