Preheat your oven to 425°F and line a large baking sheet with parchment paper.
Cut the chicken breast into bite-sized cubes and place them in a large mixing bowl with the cauliflower florets.
Add the almond flour, garlic powder, onion powder, sea salt, and black pepper to the bowl, tossing until everything is evenly coated.
Melt the ghee and whisk it together with the buffalo sauce in a small bowl.
Pour half of the buffalo-ghee mixture over the chicken and cauliflower, tossing to coat, then spread the mixture in a single layer on the prepared baking sheet.
Roast for 20-25 minutes, flipping halfway through, until the chicken is cooked through and the cauliflower edges are golden and crisp.
While the bites roast, prepare the ranch by whisking together the Greek yogurt, dried dill, and lemon juice in a small ramekin.
Remove the tray from the oven, drizzle with the remaining buffalo sauce, and serve immediately with the creamy ranch dip.