Preheat oven to 425°F and line a baking sheet with parchment paper.
In a large bowl, whisk together almond flour, garlic powder, sea salt, and black pepper.
Toss cauliflower florets and chicken breast pieces in the flour mixture until evenly coated.
Spread the cauliflower and chicken on the baking sheet and roast for 20 minutes until the chicken is cooked through and cauliflower is tender.
In a small bowl, whisk together the buffalo hot sauce and melted ghee.
Remove the tray from the oven, drizzle the buffalo mixture over the bites, and toss to coat.
Return the tray to the oven for 5 more minutes until the glaze is bubbly and slightly caramelized.
Prepare the ranch dip by stirring together Greek yogurt, dried dill, lemon juice, and onion powder in a small ramekin.
Serve the hot buffalo bites with the ranch dip and fresh celery sticks.