Preheat your oven to 400°F and line a large baking sheet with parchment paper.
In a large bowl, combine the chopped turkey, breadcrumbs, Parmesan, eggs, milk, garlic, parsley, Italian seasoning, onion powder, salt, and pepper.
Mix gently with your hands until just combined—don't overmix or the meatballs will be tough.
Shape the mixture into 1½-inch meatballs (about 24 total) and place them on the prepared baking sheet.
Brush or drizzle the meatballs lightly with olive oil.
Bake for 20-25 minutes until golden brown and cooked through (internal temperature should reach 165°F).
While meatballs bake, warm your favorite sauce in a large skillet over medium heat.
Transfer the baked meatballs to the sauce and simmer for 5 minutes to let the flavors meld.
Serve over pasta, rice, or zucchini noodles, or make meatball subs—the possibilities are endless!