Cut the mushrooms in half and set aside on a baking sheet pan lined with parchment.
Add the whey protein powder to a shallow bowl.
In another shallow bowl, whisk the egg and cream together.
If making your own powdered pork rinds, blitz the pork rinds in a high speed blender until fine.
Mix together the crushed pork rinds, salt, parsley, spices and optional parmesan in another shallow bowl.
Roll the mushrooms into the whey protein powder, then coat with the egg mixture, then roll in the pork rind mixture and place on a baking pan while you finish the rest. It’s best to do this in batches so the egg mix doesn’t get clumpy.
Place as many mushrooms as you can, without touching each other, in one single layer, on the air fryer tray. Spray the mushrooms on both sides with olive oil or avocado oil which will give them that nice golden color.
Air fry at 400 degrees F / 200c for 4 - 7 minutes depend on the size of your mushrooms, tossing once after about 3 minutes. Serve with dip of choice.
Storage: Tupperware in the fridge for 1 day (and reheated).