Cut each type of cheese into 16 cubes. Set aside.
Open the can of biscuits. Split each biscuit in half, so you end up with 16 dough pieces.
Flatten each biscuit piece into a circular shape. Place 3 pieces of cheese (one of each type of cheese) in the center of the biscuit circle.
Wrap the biscuit dough around the cheese, pinch the seams together with your fingers to seal closed.
Place cheese bombs into the air fryer basket so they are not touching. You might have to do two sets, depending on the size of your air fryer.
Baste the tops of the cheese bombs with the melted butter using a pastry brush.
Then sprinkle them with Italian seasoning.
Cook in the air fryer at 350ºF for 6 minutes. Time may vary depending on your machine so check them at 5 minutes.
Remove cheese bombs from air fryer when the tops are a deep golden brown and they are baked through.
Let them cool for a few minutes before eating. Serve them with a bowl of your favorite marinara sauce.