Preheat your air fryer to 375°F (190°C).
In a large bowl, toss the diced chicken with olive oil and season with salt and pepper.
Place the chicken in the air fryer basket in a single layer. Air fry for 10-12 minutes, shaking the basket halfway through, until the chicken is fully cooked and lightly browned.
Once the chicken is cooked, remove it from the air fryer and place it back into the bowl. Pour buffalo sauce over the chicken and toss to coat evenly.
Preheat your oven to 375°F (190°C) if you prefer baking or continue using the air fryer.
Transfer the buffalo-coated chicken to an oven-safe baking dish or a heatproof dish that fits in your air fryer basket.
Drizzle ranch dressing (or blue cheese dressing) evenly over the chicken.
Top with shredded mozzarella and cheddar cheeses, spreading them evenly.
Air fry at 375°F for 5-8 minutes or until the cheese is melted, bubbly, and golden brown. If using the oven, bake for about 10 minutes or until the cheese is fully melted and slightly crispy on top.
Once the buffalo chicken bake is finished, remove it from the air fryer or oven. Garnish with chopped green onions and crumbled blue cheese, if desired.
Serve your Air Fryer Domino’s Buffalo Chicken Bake with a side of celery sticks, extra ranch or blue cheese dressing, and your favorite dipping sauces!