Preheat your oven to 400°F.
In a bowl, combine the lean ground turkey, egg white, garlic powder, chopped parsley, salt, and pepper. Mix thoroughly until just combined, being careful not to overwork the mixture.
Shape the turkey mixture into small meatballs, about 1 to 1.5 inches in diameter, and place them on a baking sheet lined with parchment paper.
Bake the meatballs in the oven for 15-20 minutes, or until they are cooked through and slightly browned.
While the meatballs are baking, wash the zucchini and use a spiralizer to create zucchini noodles. If you don’t have a spiralizer, use a julienne peeler.
Heat the olive oil in a large skillet over medium heat. Sauté the zucchini noodles for 2-3 minutes until just tender, being careful not to overcook them.
Warm the marinara sauce in a small saucepan over low heat.
Plate the zucchini noodles, top with the baked turkey meatballs, and drizzle the warm marinara sauce over the top.
Garnish with a sprinkle of fresh parsley and serve immediately.