Preheat your oven to 400°F and line a rimmed baking sheet with parchment paper.
In a large mixing bowl, combine the ground turkey, egg, almond flour, garlic powder, onion powder, dried oregano, sea salt, and black pepper.
Gently mix the ingredients by hand until just incorporated, being careful not to overwork the meat to ensure a tender texture.
Portion the mixture and roll into approximately 8-10 meatballs, placing them evenly on the prepared baking sheet.
Bake for 15 to 18 minutes, or until the meatballs are golden brown and reach an internal temperature of 165°F.
While the meatballs bake, heat the olive oil in a large skillet over medium heat and sauté the zucchini noodles for 2 to 3 minutes until just softened.
In a small saucepan, warm the marinara sauce over low heat until simmering.
Toss the baked meatballs into the warm marinara sauce to coat, then serve immediately over the bed of zucchini noodles.