Preheat your air fryer to 180°C and remove all packaging.
Pat the skin of the duck breast with a kitchen towel to remove excess moisture. Score the skin of the duck breast and season with salt and black pepper, if desired.
Heat a frying pan on the hob over a medium to high heat without oil. Place the breast skin side down in the hot frying pan. Cook for 5 minutes until the skin turns golden brown; turn over and seal the meat for 1 minute. Pour off the excess fat regularly.
Place the duck breasts skin side up in your preheated air fryer for 14-17 minutes, depending on how you like your duck cooked. Leave to rest for 5 minutes before serving.