Preheat an air fryer to 400 degrees F (200 degrees C).
Whisk olive oil, Italian seasoning, salt, and pepper together in a large bowl. Add zucchini rounds and toss to coat.
Place zucchini in the basket of the air fryer in one layer and cook for 5 minutes. Flip zucchini over, sprinkle Parmesan cheese over the top, and cook until cheese is melted and starting to brown, about 5 more minutes.