Preheat your oven to 425°F (220°C) and line a large baking sheet with parchment paper.
Cut the chicken breast into small, bite-sized pieces and ensure the cauliflower florets are uniform in size.
In a large mixing bowl, toss the chicken and cauliflower with the arrowroot starch, garlic powder, sea salt, and black pepper until evenly coated.
Spread the mixture in a single layer on the prepared baking sheet, ensuring space between pieces for maximum crispiness.
Roast for 20 to 25 minutes, flipping halfway through, until the chicken is cooked through and the cauliflower is golden brown.
While roasting, whisk together the melted ghee and buffalo hot sauce in a small bowl.
In a separate small ramekin, stir together the Greek yogurt and chopped fresh chives to create the dipping sauce.
Once the chicken and cauliflower are done, transfer them to a clean bowl and toss gently with the buffalo ghee mixture.
Serve immediately while hot and crispy with the chilled yogurt dip on the side.