Preheat your oven to 400°F 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.
In a large mixing bowl, toss the chicken and cauliflower with the olive oil, sea salt, black pepper, and garlic powder until evenly coated.
Spread the mixture in a single layer on the prepared baking sheet and roast for 20 to 25 minutes, or until the chicken is cooked through and the cauliflower is tender with golden edges.
While roasting, whisk together the buffalo hot sauce and melted ghee in a small bowl to create the buffalo glaze.
In a separate small bowl, combine the Greek yogurt, chopped fresh dill, lemon juice, and onion powder to make the ranch dip.
Once the chicken and cauliflower are done, transfer them back to the large bowl, pour the buffalo glaze over them, and toss gently to coat.
Serve the warm buffalo bites immediately with the chilled ranch dip on the side.