Peel the potatoes and rinse them under cold water. Then dab them dry using kitchen towels.
Slice the potatoes in quarter to half-inch pieces.
Place a chopstick on each side of a potato slice. This ensures they aren't cut all the way through. Use a knife to make thin horizontal cuts across the potato.
Then, flip the potato slices over and cut the other side diagonally. Repeat steps 3 and 4 with all of the potato slices.
Cover the potatoes with olive oil and season with salt.
Put them in the air fryer for 30-35 minutes at 350 degrees or until golden brown. Make sure to flip them over halfway through cooking so both sides get evenly crispy.
Serve while hot.