Preheat the air fryer to 350°F (180°C).
In a mixing bowl, combine the cubed bread, olive oil, garlic powder, onion powder, salt, and black pepper. Toss to coat evenly.
Once the air fryer is preheated, place the bread cubes in the air fryer basket. Make sure to spread them out in a single layer.
Cook the croutons for 5-7 minutes, shaking the basket every 2-3 minutes, until they are golden brown and crispy.
Once done, remove the croutons from the air fryer and let them cool for a few minutes before serving.
Enjoy your homemade air fryer croutons on your favorite salad, soup, or simply as a crunchy snack!