Drain the can of mushrooms completely. (No need to dry them on a paper towel.)
Dump the mushroom slices into a bowl. Drizzle or spray the mushrooms with the oil. Use your hands and toss the pieces to coat them in oil. (You don’t need much oil at all; they shouldn’t be oily.)
Spread out the mushroom pieces in the air fryer basket. They can be touching each other edge to edge but try to avoid overlapping. At the end they’ll move around anyway, but it helps them cook at the same rate.
Set the machine to the 'air fry' setting at 390°F and let ‘er rip for 12 to 15 minutes. There’s no need to flip them, but check on them to see if they’re done on the early side.
The chips will be much smaller and browned. Test one by putting it on a plate to cool for a few seconds (they hardly need a moment to cool). Eat it. If the center is still bendy, then air fry for another minute or two.
