Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
Cut the chicken breast into bite-sized cubes and break the cauliflower into small, uniform florets to ensure even cooking.
In a large mixing bowl, toss the chicken and cauliflower with melted ghee, sea salt, and black pepper until thoroughly coated.
Spread the mixture in a single layer on the prepared baking sheet and roast for 20-25 minutes, flipping halfway through, until the chicken is cooked through and the cauliflower is tender with golden edges.
While the chicken and cauliflower roast, whisk together the Greek yogurt, lemon juice, garlic powder, onion powder, and dried dill in a small bowl to create the ranch dressing.
Once roasted, transfer the chicken and cauliflower to a clean bowl and toss with the buffalo sauce until every piece is coated in the zesty glaze.
Serve the crispy bites immediately with the chilled ranch dressing on the side for dipping.