Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a large mixing bowl, combine the ground turkey, breadcrumbs, Parmesan cheese, chopped parsley, egg, minced garlic, onion powder, salt, black pepper, oregano, and basil. Mix well until all ingredients are evenly incorporated.
Using your hands, form the mixture into 1-inch meatballs and place them on the prepared baking sheet, leaving space between each meatball.
Bake the meatballs in the preheated oven for 20-25 minutes, or until they reach an internal temperature of 165°F (74°C).
While the meatballs are baking, heat the marinara sauce in a saucepan over medium heat until it simmers.
Once the meatballs are done, transfer them to the saucepan with the marinara sauce. Let them simmer in the sauce for about 5 minutes to absorb some flavor before serving.
Serve the turkey meatballs hot over spaghetti, rice, or on their own. Garnish with additional parsley and Parmesan cheese if desired.