Preheat your air fryer to 400°F.
Cut the chicken breast into bite-sized cubes and ensure the cauliflower is broken into small, even florets.
In a large mixing bowl, toss the chicken and cauliflower with avocado oil, garlic powder, onion powder, sea salt, and black pepper until evenly coated.
Place the mixture into the air fryer basket in a single layer, working in batches if necessary to avoid overcrowding.
Air fry for 12-15 minutes, shaking the basket halfway through, until the chicken is cooked through and the cauliflower is golden and crispy.
While the bites are cooking, whisk together the Greek yogurt, dried dill, and lemon juice in a small bowl to create the ranch dip.
In a separate clean bowl, whisk together the buffalo hot sauce and melted ghee.
Once the chicken and cauliflower are done, transfer them to the buffalo sauce bowl and toss gently to coat.
Serve the warm buffalo bites immediately with the chilled ranch dip and fresh celery stalks on the side.