Arrange the frozen fries in an even layer in the air fryer basket. Lightly coat them with a spray of olive oil and sprinkle your preferred amount of seasoning salt over the fries.
Set the air fryer to 400°F and cook for 10 minutes. Halfway through cooking, give the basket a good shake to ensure even crisping. Continue cooking for another 5-10 minutes, or until the fries are golden and crispy to your liking.