Spray your waffle iron with cooking spray and preheat it by the manufactory's directions.
Peel and grate the potatoes with a hand grater or food processor.
Add the grated potatoes to a mixing bowl.
Add the egg, shredded mozzarella, potato starch, salt, and pepper to the bowl and mix well.
Ladle the batter to the waffle iron – I recommend using 1 tablespoon of batter for each latke to keep them small and thin.
Cook by manufactory directions.
Chop the chive, if using.
Sprinkle the chive on the latkes.
Serve with sour cream or other toppings and Happy Hanukkah!