In a large bowl, combine ground chicken, breadcrumbs, egg, garlic, Parmesan, oregano, salt, and pepper.
Mix until well combined.
Shape the mixture into small meatballs, about 1 inch in diameter.
Heat olive oil in a skillet over medium heat.
Cook the meatballs in batches, turning occasionally, until golden brown and fully cooked (about 10-12 minutes).
Serve immediately or store in airtight containers for meal prep.