Slice the eggplant into ½ inch rounds. This thickness allows for even cooking and ensures the eggplant becomes tender while still holding its shape.

Sprinkle the salt over the eggplant slices and let them sit for about 10 minutes. This step helps to draw out excess moisture and bitterness from the eggplant.

After 10 minutes, pat the eggplant slices dry with paper towels to remove the moisture and salt. This will help achieve a crispier texture when air frying.

In a mixing bowl, combine the olive oil, garlic powder, onion powder, smoked paprika, black pepper, and cayenne pepper (if using). Mix well to create a seasoning blend.

Add the dried eggplant slices to the bowl and toss them in the seasoning mixture until they are evenly coated. This ensures that every bite is flavorful.

Preheat your air fryer to 375°F (190°C) for about 5 minutes. Preheating helps to create a crispy exterior.

Arrange the seasoned eggplant slices in a single layer in the air fryer basket. Avoid overcrowding to allow for even cooking.

Air fry the eggplant for 10 minutes, then flip the slices and cook for an additional 5-10 minutes, or until they are golden brown and crispy. Cooking time may vary depending on your air fryer model.

If desired, sprinkle the grated Parmesan cheese over the eggplant slices during the last 2 minutes of cooking for a cheesy finish.

Once cooked, remove the eggplant from the air fryer and let it cool for a couple of minutes. This helps to enhance the flavor.

Serve warm as a side dish or snack. Enjoy your crispy air fryer eggplant!