Spray air fryer basket with olive oil and then add zucchini in a single layer (you will likely need to do this in 2 batches). Spray zucchini with olive oil. Add 1 Tablespoon of parmesan cheese on top, reserving the other 1 Tablespoon for the second batch.
Air fry for 7-10 minutes at 400 degrees F. Repeat for the second batch.
Notes
If cooking in batches, once the second batch is done, thrown the first batch in for a minute to reheat.
All air fryers cook differently. Cook times may depend on the thinness of zucchini, how much oil you sprayed onto your zucchini, and your air fryer.