Preheat your oven to 400°F and line a large baking sheet with parchment paper to prevent sticking.
In a large mixing bowl, combine the ground turkey, egg, almond flour, chopped parsley, garlic powder, onion powder, sea salt, and black pepper.
Gently mix the ingredients by hand until just combined, being careful not to overwork the meat to ensure a light and tender texture.
Scoop and roll the mixture into 1.5-inch meatballs, placing them evenly spaced 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, warm the marinara sauce in a large skillet over medium-low heat until it begins to simmer.
Carefully transfer the baked meatballs into the skillet and toss gently to coat them thoroughly in the warm sauce.
Serve the saucy meatballs over a bed of fresh zucchini noodles, which can be lightly sautéed for 2 minutes if a softer texture is preferred.