Preheat your oven to 425°F and line a large baking sheet with parchment paper for easy cleanup.
Dice the chicken breast into bite-sized pieces and place them in a large mixing bowl with the cauliflower florets.
Melt the ghee and pour it over the chicken and cauliflower, then sprinkle with garlic powder, sea salt, and black pepper.
Toss everything together until evenly coated, then spread the mixture in a single layer on the prepared baking sheet.
Roast for 20 to 25 minutes, tossing halfway through, until the chicken is cooked through and the cauliflower edges are golden and crispy.
While the tray is roasting, whisk together the Greek yogurt, lemon juice, and finely chopped chives in a small bowl to make the ranch-style dip.
Remove the tray from the oven, transfer the chicken and cauliflower to a clean bowl, and toss with the buffalo sauce until well-coated.
Serve the warm buffalo bites immediately with the chilled yogurt dipping sauce on the side.