Preheat a skillet over medium heat and add the olive oil.
In a bowl, combine the lean ground turkey, egg whites, minced garlic, finely chopped onion, Italian seasoning, salt, and pepper.
Form the mixture into small meatballs, roughly 1 to 1.5 inches in diameter.
Place the meatballs into the heated skillet and cook for about 6-8 minutes, turning occasionally until all sides are browned and cooked through.
While the meatballs are cooking, spiralize the zucchini to create noodles. If you don’t have a spiralizer, you can use a vegetable peeler to create thin strips.
In a separate pan, warm the diced tomatoes; season lightly with salt and pepper to create a simple marinara sauce.
Toss the zucchini noodles in the pan with the warmed tomatoes for 1-2 minutes until they are just tender, but not mushy.
Plate the zucchini noodles, place the turkey meatballs on top, and sprinkle with grated Parmesan Cheese.
Serve immediately and enjoy your healthy, protein-packed meal.