Pizza with Meatball Crust

Name: Pizza with Meatball Crust
Ingredients: 1 pound refrigerated pizza dough; Coarse cornmeal, for dusting; 2 slices thick-cut bacon; 8 ounces ground beef; 1/4 cup grated parmesan cheese, plus more for topping; 1 large egg, lightly beaten; 2 tablespoons breadcrumbs; 2 tablespoons milk; 2 tablespoons finely chopped fresh parsley; 1 clove garlic, grated; 1/2 teaspoon dried oregano; Kosher salt and freshly ground pepper; 1 cup shredded part-skim mozzarella cheese (about 4 ounces); 1/2 cup plus 2 tablespoons marinara or pizza sauce