Preheat the air fryer to 375°F (190°C).
In a large bowl, mix ground chicken, zucchini, onion, garlic, breadcrumbs, egg, cheese, oregano, salt, and pepper until well combined.
Shape the mixture into small rissoles (about the size of a golf ball) and flatten slightly.
Lightly brush or spray with olive oil.
Place rissoles in a single layer in the air fryer basket. Cook for 12-15 minutes, flipping halfway through, until golden brown and cooked through (internal temp of 165°F/75°C).
Serve hot with your favorite dipping sauce.
Enjoy