Heat an air fryer to 400°F. Place about 1/2 bag frozen tater tots in a single layer in the basket (they can be touching). Air fry for 6 minutes. Shake the basket to toss the tater tots. Air fry until golden brown and crispy, 4 to 6 minutes more. Transfer to a serving bowl and repeat air frying the remaining tater tots. Sprinkle with 1/4 teaspoon seasoned salt if desired and toss to combine.