Preheat the air fryer to 390°F. If your air fryer does not have a preheat setting, run it at 390°F for 5 minutes.
Place the flour in one shallow bowl and beat the eggs in a second shallow bowl.
In a third shallow bowl, combine the breadcrumbs, garlic powder, salt, and pepper.
Coat each chicken tender in the flour, dip it into the eggs, and then coat it with the breadcrumb mixture.
Spray the breaded chicken tenders with cooking spray.
Arrange the chicken in a single layer in the air fryer basket. Cook in batches if necessary.
Air fry at 390°F for 8 minutes.
Flip the chicken and spray the other side with cooking spray. Cook for another 7–8 minutes, until golden brown and the internal temperature reaches 165°F.