Grate the zucchini and use a clean kitchen towel to squeeze out as much moisture as possible.
In a medium mixing bowl, combine the squeezed zucchini, ground turkey, egg, almond flour, sea salt, black pepper, and onion powder.
Form the mixture into four even patties, pressing them firmly so they hold their shape.
Heat the olive oil in a large non-stick skillet over medium heat.
Cook the fritters for about 5 minutes per side until they are golden brown and the turkey is fully cooked.
While the fritters cook, whisk together the Greek yogurt, fresh dill, lemon juice, and minced garlic in a small bowl.
Serve the warm fritters immediately with a dollop of the cool yogurt sauce.