Preheat oven to 400°F. Spray a rimmed aluminum foil-lined baking sheet or broiler pan with nonstick cooking spray. Set aside.
In a medium size mixing bowl, mix together ground chicken, panko breadcrumbs, onion, Parmesan, milk, olive oil, eggs, parsley, garlic, Italian seasoning, seasoned salt, black pepper and onion powder until fully combined.
Use a small scoop or meatball scoop to form into 1-inch balls. Place onto prepared pan at least 1-inch apart. If baking in batches, chill mixture between baking.
Bake for 15-18 minutes or until cooked through.
Serve with pasta, on hoagie rolls or as an appetizer with warm pasta sauce or pizza sauce for dipping.
Notes
Protein: You can use ground turkey, ground pork sausage, ground beef or Italian sausage.
Herbs: You could toss in additional fresh herbs such as rosemary, chives or thyme.
Cheese: You can bake the meatballs and then drizzle them with marinara sauce and top with shredded mozzarella cheese (melt under the broiler!) for a quick and easy topping for pasta or zucchini noodles, if you're watching your carbs.
Spice: If you'd like to add spice to the meatballs, add 1 teaspoon of crushed red pepper flakes to the meatball mixture. You can adapt the amount to your taste.
Bread Crumbs: You could use dry Italian bread crumbs in place of panko or Italian seasoned panko breadcrumbs. You could also use gluten-free breadcrumbs.