Meatball Parm Sandwiches

Name: Meatball Parm Sandwiches
Ingredients: 3 large eggs; 3/4 cup grated pecorino romano or parmesan cheese; 1/2 cup fresh parsley, chopped; 1 clove garlic, minced; Kosher salt and freshly cracked pepper; 1 1/2 pounds ground beef chuck; 1/2 pound ground pork; 1/2 pound ground veal (if you don¿t like veal, just use more beef); 1/2 cup panko breadcrumbs; Olive oil, for frying; 6 ciabatta buns, split; 1 16-ounce jar marinara sauce, warmed; 1 pound fresh mozzarella, sliced; 1 cup hot giardiniera, drained and roughly chopped; 1 12-ounce jar roasted red peppers, drained and sliced into strips