In bread machine pan, place the first eight ingredients in order suggested by manufacturer. Select dough setting (check dough after 5 minutes of mixing; add 1 to 2 tablespoons of water or flour if needed).
When cycle is completed, turn dough onto a lightly floured surface. Roll into a 14-in. circle. Sprinkle a greased 14-in. pizza pan with cornmeal. Transfer dough to prepared pan.
Combine spaghetti sauce and sugar if desired; spread over dough. Top with the pepperoni, tomatoes, onion, cheeses and Italian seasoning.
Bake at 400° for 30-35 minutes or until crust is lightly browned. Let stand for 10 minutes before cutting. Yield: 8 slices.