Preheat Air Fryer to 400 degrees F. Place Tyson Any'tizers Popcorn Chicken in a single layer. Cook 15 minutes, until heated through and crispy.
~ OR ~
Preheat oven to 400 degrees F. Place Tyson Any'tizers Popcorn Chicken in a single layer on a foil-lined baking sheet. Bake chicken 15-20 minutes according to package directions.
In small saucepan, combine buffalo sauce, brown sugar, apple cider vinegar, minced garlic, salt, and red pepper flakes. Over medium heat, whisk constantly until the sauce to a simmer. Reduce heat to low and simmer for 10 minutes.
Increase heat to medium. In a small bowl, combine cornstarch and water to make a slurry.
Quickly whisk in the cornstarch slurry and continue cooking sauce for 2-3 minutes until thickened. Reduce heat to low.
When chicken is finished cooking, transfer chicken to medium bowl and slowly stir in sauce until chicken is fully coated. Transfer to serving platter.