Grate the zucchini and potatoes; toss in the lemon juice to prevent browning.
Squeeze the zucchini and potatoes through towels or a sieve. It is imperative that you get almost all the moisture out of the vegetables.
Add the scallions, cheese, garlic, 1/2 cup of the parsley, salt and pepper, sugar, flour, and eggs; toss to make sure that the ingredients are well-mixed.
Heat 1/2 inch of peanut oil in a pan until hot.
Add thin silver dollar-sized pancakes to the pan, frying over high heat until golden brown and crispy.
When serving, sprinkle with a little more salt and the remaining chopped parsley.