Preheat your oven to 425°F (220°C) and line a large baking sheet with parchment paper.
Cut the chicken breast into bite-sized cubes and ensure the cauliflower florets are uniform in size.
In a large mixing bowl, toss the chicken and cauliflower with the almond flour, sea salt, and black pepper until evenly coated.
Melt the ghee in a small bowl and whisk it together with the buffalo hot sauce.
Drizzle half of the buffalo-ghee mixture over the chicken and cauliflower, tossing well to combine.
Spread the mixture in a single layer on the baking sheet and roast for 20-25 minutes until the chicken is cooked through and the cauliflower edges are golden brown.
While the tray is roasting, prepare the ranch by whisking together the Greek yogurt, lemon juice, dried dill, garlic powder, and onion powder in a small ramekin.
Remove the tray from the oven, drizzle with the remaining buffalo sauce, and serve immediately with the chilled ranch dip on the side.