Heat oven to 425°F. Spray 12-inch pizza pan with cooking spray. Sprinkle cornmeal in pan. Unroll dough in pan. Starting at center, press out dough to edge of pan. Pinch edge of dough to make 1/2-inch rim.
In small bowl, stir crabmeat, cream cheese, mayonnaise and seasoning until well mixed. Spread crabmeat mixture evenly over dough. Top with mozzarella cheese. Sprinkle with bell pepper and onions.
Bake 15 to 18 minutes or until crust is deep golden brown. Let stand 2 minutes before cutting.