Meatball Sub Bites

Name: Meatball Sub Bites
Ingredients: Cooking spray; 2 large eggs, divided; 1 lb. ground beef; 1/2 medium yellow onion, finely chopped (about 1/4 c.); 1 1/4 oz. shredded Provolone (about 1/3 c.); 3 cloves garlic, finely chopped; 2 tbsp. chopped fresh flat-leaf parsley; 2 tbsp. Italian bread crumbs; 1 tbsp. chopped fresh basil; 1 tbsp. chopped fresh oregano; 1 tsp. kosher salt; 1/2 tsp. fresh ground black pepper; 2 oz. shredded Parmesan (about 3/4 c.), divided; 24 perlini or noccioline mozzarella balls; 12 oz. store-bought or homemade pizza dough; 2 tbsp. extra-virgin olive oil; 2 cloves garlic, finely chopped; 1 (28-oz.) can crushed tomatoes; 2 sprigs basil; 2 sprigs oregano; 2 tbsp. shredded Parmesan; 2 1/2 tsp. kosher salt; 1/2 tsp. crushed red pepper flakes