Cut mozzarella into stick-sized pieces
Pat the cheese dry
Set out flour in one bowl
Beat eggs in a second bowl
Mix breadcrumbs with salt, pepper, and optional Italian seasoning in a third bowl
Coat each cheese stick in flour
Dip each stick in beaten eggs
Roll each stick in breadcrumbs
Repeat egg and breadcrumb coating for a thicker crust
Place coated sticks on a tray
Freeze the sticks for at least 1 hour
Heat oil in a deep pan to 350°F
Fry the sticks in small batches until golden brown
Remove and drain on paper towels
Serve warm with marinara sauce