Preheat oven to 425°F and line a large baking sheet with parchment paper.
Cut chicken breast and cauliflower into bite-sized pieces, ensuring they are uniform for even cooking.
In a bowl, toss chicken and cauliflower with olive oil, garlic powder, onion powder, sea salt, and black pepper.
Spread the mixture onto the baking sheet in a single layer and roast for 20 minutes, flipping halfway through, until the chicken is cooked and edges are golden.
While roasting, whisk together the Greek yogurt, dried dill, and lemon juice in a small bowl to create the ranch dressing.
In a small saucepan or microwave-safe dish, melt the ghee and whisk in the buffalo sauce until smooth.
Remove the tray from the oven, drizzle the buffalo mixture over the chicken and cauliflower, and toss to coat thoroughly.
Serve the buffalo bites warm with the creamy ranch on the side and sliced avocado for extra richness.