Preheat your oven to 425°F and line a large rimmed baking sheet with parchment paper for easy cleanup.
Cut the chicken breast into 1-inch bite-sized pieces and ensure the cauliflower is chopped into similar-sized florets.
In a large mixing bowl, toss the chicken and cauliflower with the arrowroot powder, garlic powder, onion powder, sea salt, and black pepper until every piece is evenly coated.
Melt the ghee and whisk it together with the buffalo hot sauce in a small ramekin, then drizzle the mixture over the chicken and cauliflower.
Toss everything together once more until the pieces are thoroughly saturated with the buffalo glaze.
Spread the mixture in a single layer on the prepared baking sheet, making sure not to crowd the pan so the edges can get properly crispy.
Roast for 22-25 minutes, flipping the pieces halfway through, until the chicken is cooked through and the cauliflower is tender with charred, golden edges.
While the bites roast, stir together the Greek yogurt, dried dill, and lemon juice in a small bowl to create a clean-eating ranch-style dip.
Remove from the oven and serve the crispy bites immediately with the cool herb dip on the side.