Knead the pizza dough and leave it to rise for 1 hour, punch down dough, divide the dough into two parts, roll one part into a 9 inch pie plate, gently press the dough into the pie plate.
Arrange half of the mozzarella over the bottom of the crust, spread half cup pizza sauce over the cheese.
Sprinkle 2 tbsp cheddar cheese over the sauce, again drizzle pizza sauce over the cheddar cheese, top with half quantity of the mince and slices of pepperoni, repeat the layer with the remaining mozzarella, pizza sauce, cheddar cheese, top with remaining pepperoni, veggies, oregano, crushed red pepper, roll the remaining half dough, cover the top.
Pinch the edges to seal, cut several slits in the top of the crust.
Bake until golden brown about 35 mins, sprinkle with parmesan before serving.