Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Cut the chicken breast into 1-inch bite-sized pieces and ensure the cauliflower is broken into small, uniform florets.
In a large bowl, toss the chicken and cauliflower with the olive oil, sea salt, and black pepper until evenly coated.
Spread the mixture onto the prepared baking sheet in a single layer and roast for 18 to 20 minutes, or until the chicken is cooked through and the cauliflower is tender with golden edges.
While the base roasts, whisk the Greek yogurt, lemon juice, garlic powder, onion powder, and dried dill in a small bowl to create the ranch dip; set aside in the refrigerator.
In a small saucepan over low heat, melt the ghee and whisk in the buffalo hot sauce until the mixture is smooth and emulsified.
Transfer the roasted chicken and cauliflower to a clean bowl, pour the warm buffalo sauce over them, and toss gently to coat every piece.
Serve the warm buffalo bites immediately with the chilled ranch dip on the side for dipping.