Preheat the oven to 425 F degrees. Grease a baking sheet/pizza pan.
Divide the pizza dough in half. Make a 7-inch circle, adding a lip to the edge of the crust. Repeat with the other half.
Brush pizza crust with olive oil
Divide the mozzarella cheese and sprinkle the cheese over the olive oil, saving about one ounce to sprinkle over the onion and mushrooms
Top the cheese with your caramelized onions and mushrooms
Sprinkle the remaining cheese over top of the onion and mushrooms
Sprinkle Italian seasoning over top of pizza
Bake in the preheated oven for 13 to 15 minutes or until the crust is golden brown.