1. Preheat the Air Fryer: Start by preheating your air fryer to 375°F. This step ensures that the green beans will start cooking immediately on a hot surface, promoting even crisping.

2. Prepare the Green Beans: While the air fryer heats up, place the trimmed green beans in a mixing bowl. Drizzle with olive oil or avocado oil. This helps the spices stick to the beans and ensures they crisp up nicely.

3. Season: Add chili flakes, garlic powder, salt, and black pepper to the green beans. Toss them well to evenly coat each bean with the spice mixture. This is key for that delightful, even spice distribution.

4. Arrange in the Air Fryer: Transfer the seasoned green beans to the air fryer basket. Spread them out into a single layer. This prevents them from steaming and helps achieve that desired crispiness.

5. Cook: Air fry the green beans for about 10 minutes. Halfway through, shake the basket or use kitchen tongs to turn the beans. This ensures all sides get a nice, even crisp.

6. Check for Doneness: The green beans should be tender and slightly crisp on the outside. If they’re not crispy enough for your liking, cook for an additional 2-3 minutes.

7. Serve: Remove the green beans from the air fryer and serve immediately. They are best enjoyed hot and crispy!