Wash the radishes thoroughly to remove any dirt. Trim off the tops and roots.

If the radishes are large, you can cut them in half or quarters for more even cooking. If they are small, you can leave them whole.

In a mixing bowl, toss the radishes with olive oil, ensuring they're well-coated.

Sprinkle with salt, black pepper, and garlic powder (if using), mixing until they're evenly seasoned. If you're using fresh herbs, you can add them now as well.

While some models may not require it, preheating your air fryer can provide more consistent results. Preheat it to 375°F (190°C) for about 3 minutes.

Arrange the seasoned radishes in a single layer in the air fryer basket, ensuring they aren't overcrowded to allow for proper air circulation.

Cook at 375°F (190°C) for about 15-20 minutes. It's a good idea to shake the basket or stir the radishes halfway through the cooking process to ensure even roasting.

The radishes should be golden brown on the outside and fork-tender on the inside when done. If you prefer them crispier, you can extend the cooking time by a few minutes.

Once roasted to your liking, transfer the radishes to a serving dish. You can garnish with additional fresh herbs or a sprinkle of sea salt if desired.

Serve hot as a side dish.