Preheat your oven to 425°F and line a large baking sheet with parchment paper to prevent sticking.
Wash and trim the ends of the green beans, then pat them completely dry with a kitchen towel to ensure the coating adheres.
In a shallow bowl, whisk the egg until the yolk and white are fully combined.
In a second shallow dish, stir together the Parmesan cheese, almond flour, garlic powder, onion powder, sea salt, and black pepper.
Working in small batches, dip the green beans into the egg wash and then roll them in the Parmesan mixture until well coated.
Arrange the coated beans in a single layer on the prepared baking sheet, ensuring they do not overlap.
Bake for 12 to 15 minutes, or until the coating is golden brown and the green beans have reached a tender-crisp texture.
While the beans are roasting, whisk the Greek yogurt and lemon juice together in a small ramekin to create a bright dipping sauce.
Remove the fries from the oven and serve immediately while hot and crispy alongside the lemon-yogurt dip.