Separate string cheese from package and evenly cut across the center the each. Place saran wrap/cling wrap across baking sheet and place string cheese on sheet then freeze for 20 minutes.
Crack eggs in bowl and whisk until smooth; set aside. Pour flour in separate bowl; set aside. Mix together panko and bread crumbs, Parmesan cheese, salt, parsley and Italian seasoning in a bowl; set aside. Preheat oven to 400 degrees F.
Dip mozzarella in (1) flour then coat in (2) egg then (3) flour then (4) egg then (5) bread crumb mixture. Spread evenly on a prepared baking sheet with foil and a little cooking spray. Repeat process until done then lightly spray the tops with cooking spray. Place in freezer for 20-30 minutes then bake for 4-5 minutes on one side. Flip over and bake for another 4-5 minutes. Serve with marinara sauce.