Preheat oven to 400°F (200°C).
In a bowl, combine ground turkey, Parmesan, breadcrumbs, egg, garlic, oregano, salt, and pepper. Mix until just combined.
Form mixture into 16 small meatballs and place on a baking sheet lined with parchment paper.
Bake meatballs for 15-18 minutes, until cooked through and lightly browned.
While meatballs bake, heat olive oil in a large skillet over medium heat.
Add zucchini noodles and sauté for 2-3 minutes until just tender; avoid overcooking to prevent sogginess.
Pour marinara sauce over the zucchini noodles and stir to coat evenly.
Add cooked turkey meatballs to the skillet, gently mixing to combine and heat through.
Serve immediately, garnished with fresh basil leaves.