In a bowl, mix butter, crushed garlic, parsley, and a pinch of salt to make garlic butter.
Place diced chicken into the air fryer basket.
Spoon the garlic butter evenly over the chicken.
Cook at 400°F (200°C) for 15 minutes.
Add the broccoli to the basket.
Continue cooking for another 10 minutes, shaking halfway through.
Ensure chicken is cooked through and broccoli is tender.
Serve warm. This Air Fryer Garlic Butter Chicken Traybake is best enjoyed fresh.