In a medium bowl, combine 1 cup of all-purpose flour, 2 teaspoons of garlic powder, ½ teaspoon of ground black pepper, and 2 teaspoons of sea salt. Whisk them together until evenly mixed; this will ensure a burst of flavor in every bite of your Air Fryer Banana Peppers. Set aside for later use.

Take 1 pound of fresh banana peppers and slice them in half lengthwise. Carefully remove the seeds and the membranes using a small spoon, as this helps ensure even cooking and perfect texture. The cut sides should be facing upward, making them ready to be coated in the next step.

Dip each banana pepper half into the seasoned flour mixture, ensuring they are thoroughly coated on all sides. Allow them to sit for about 5 minutes; this step is crucial for building that irresistible crunch in your Air Fryer Banana Peppers. Make sure you get an even coating for the best results.

Preheat your air fryer to 350°F (175°C) for about 3-5 minutes. This step is vital as it allows the Air Fryer Banana Peppers to cook evenly and achieve that golden brown crispiness. Ensure your air fryer basket is clean and ready for the peppers.

Carefully place the coated pepper halves in the preheated air fryer basket in a single layer. Avoid overcrowding to ensure optimal airflow and crispiness. Lightly spray both sides of the peppers with olive oil, giving them that extra boost needed for achieving a delightful crunch.

Air fry the banana peppers for about 8 minutes. Keep an eye on them halfway through the cooking time, checking for that perfect golden brown color and crispiness. Adjust the time as needed, since air fryers can vary slightly in temperature.

Once your Air Fryer Banana Peppers are crispy and golden, transfer them to a paper towel-lined baking sheet to drain any excess oil. Allow them to cool for about 5 minutes before serving. This brief resting period enhances their crunch and makes them perfect for enjoying on their own or as a topping!