Prep the chicken: Wash and pat dry the boneless chicken, then cut it into small, bite-sized pieces.
Mix the marinade: In a bowl, combine chicken with oregano, mixed herbs, black pepper, salt, lemon juice, and oil. Mix well to coat evenly.
Marinate: Cover and refrigerate for 4 hours.
Preheat: Preheat the air fryer to 180°C (360°F) for 3 to 5 minutes.
Arrange: Spray the basket with oil and place chicken pieces in a single layer.
Air fry: Cook at 180°C (360°F) for 20 minutes, shaking or flipping halfway and spraying more oil.
Serve: Once golden and crispy, remove and serve hot with your favorite dip.