Step 1

Position racks in top and bottom third of oven; preheat to 375°F. (Alternatively, see Air-Fryer Version below.) Line 2 large rimmed baking sheets with parchment paper; coat with cooking spray.

Step 2

Place cauliflower in a large microwave-safe bowl. Microwave on High, uncovered and stirring halfway through, until tender, about 2 minutes. Place the cauliflower in a clean kitchen towel (or paper towels); squeeze out as much liquid as possible. Place the cauliflower in a medium bowl; add Parmesan, Italian seasoning, pepper and salt; stir until combined.

Step 3

Using a leveled tablespoon, portion mounds of cauliflower mixture 2 inches apart on the prepared baking sheets. Using a lightly greased bottom of a measuring cup or glass, press each portion into a circle about 1/8 inch thick.

Step 4

Bake both pans, rotating them halfway through, until the chips are golden brown and crisp, about 20 minutes. Transfer to a paper-towel-lined plate; let cool completely, about 20 minutes.