In a large bowl, combine the sweet potato, carrots, zucchini, flour, scallions, egg, salt and pepper. Stir the mixture together with a spatula or wooden spoon until combined.
Add 2 - 3 tablespoons of coconut oil into a large skillet over medium-high heat. Once the oil is hot, form small patties out of the vegetable mixture in your hands.
Cook the fritters until golden brown, about 2 - 3 minutes, then flip cook an additional 1 - 2 minutes. Transfer the fritters to a cooling rack.