I happen to love crispy salmon skin so I leave mine on. The air fryer is a great way to get it nice and crispy. Salmon skin also contains the highest concentration of omega-3 fatty acids on the fish so I like to get the extra nutrition. While I love the skin, my husband doesn't so I remove it for him (and sometimes I even eat his..lol). It is super easy to remove after cooking in the air fryer. You should be able to slide the whole piece of fish right off the skin with a spatula. You can alkso remove the skin before cooking however I like that it keeps the fish moist and flavorful while cooking with it on.