Slice the bagel, top to bottom, into ⅛ inch-thick rounds.
Add the bagel slices to a large bowl, then add olive oil, garlic powder, Italian seasoning, and grated Parmesan cheese. Stir until fully coated.
Preheat the air fryer to 350 degrees F (175 degrees C).
Arrange the bagel slices in a single layer and cook for 5-7 minutes, flipping halfway through.
Move chips to a paper towel-lined plate to remove excess oil. Chips will crisp up as they cool down.
