Preheat the oven to 200 °C (about 400 °F) and lightly grease a baking sheet with 2 tablespoons of olive oil.
In a bowl, combine the breadcrumbs, onion powder, dried parsley, salt and pepper.
Add the ground chicken, minced garlic, egg, feta, and sun-dried tomatoes, mixing until everything is well incorporated.
Shape the mixture into meatballs and place them on the oiled baking sheet.
Bake at 200 °C (400 °F) for about 24 minutes, or until the internal temperature reaches 165 °F. Turn the meatballs halfway through cooking for even browning.