In a large mixing bowl, combine the ground chicken, egg, breadcrumbs, grated onion, olive oil, minced garlic, garlic powder, salt, and pepper.
1 lb (500g) ground chicken, 1 egg, ½ cup breadcrumbs, ½ cup grated onion, 1 tablespoon olive oil, 2 teaspoons minced garlic, ½ teaspoon garlic powder, ½ teaspoon salt, ¼ teaspoon ground black pepper