Let dough rise in a warm place until doubled. On lightly floured surface punch down and roll out into a rectangle. Brush two tablespoons of prepared Italian seasoning over bread leaving an inch around edges. Line the bread with pepperoni and sprinkle the cheese on top.
In a skillet brown the venison in the oil with the onions, mushrooms, and green pepper. Season with the Italian seasoning. Drain.
Pour the venison mixture over the cheese. Spray a baking sheet and preheat oven 350 degrees. Carefully roll up the bread dough and seal on the bottom pushing in the ends and place on baking sheet seam side down.
Brush the top with the remaining Italian seasoning and sprinkle with Parmesan cheese. Bake 30 minutes. Let sit 5 minutes and slice into pieces. Serve with warm pizza sauce if desired.