2 pounds boneless, skinless chicken, turkey or pork cutlets (or use chicken thighs for even more flavor)
½ cup all-purpose flour
3 large eggs
2 to 3 cups panko bread crumbs, as needed
Kosher salt, as needed
Black pepper, as needed
Olive oil, for frying
5 cups Simple Tomato Sauce (see recipe)
1 cup finely grated Parmesan, preferably Parmigiano-Reggiano
½ pound fresh mozzarella, torn into bite-sized pieces