Preheat your oven to 425°F and line a large baking sheet with parchment paper for easy cleanup.
In a large mixing bowl, toss the cauliflower florets with avocado oil, sea salt, black pepper, and garlic powder until evenly coated.
Spread the cauliflower in a single layer on the baking sheet and roast for 20-25 minutes, flipping halfway through, until the edges are golden and crispy.
While the cauliflower roasts, season the chicken breast with a pinch of salt and pepper, then grill or pan-sear over medium-high heat for 6-7 minutes per side until the internal temperature reaches 165°F.
In a small microwave-safe bowl, melt the ghee and whisk it together with the buffalo hot sauce until emulsified.
Slice the cooked chicken breast into bite-sized strips and finely dice the celery stalks.
Place the roasted cauliflower, sliced chicken, and diced celery into a clean mixing bowl.
Drizzle the buffalo-ghee sauce over the ingredients and toss thoroughly to ensure every bite is coated in the spicy glaze before serving.