Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Cut the chicken breast into bite-sized cubes and ensure the cauliflower is broken into small, uniform florets.
In a large mixing bowl, toss the chicken and cauliflower with the extra virgin olive oil, sea salt, and black pepper until every piece is lightly coated.
Spread the chicken and cauliflower onto the prepared baking sheet in a single layer, ensuring they aren't crowded so they roast rather than steam.
Roast for 20 minutes, flipping the pieces halfway through the cooking time to ensure even browning.
While the bites roast, prepare the ranch dip by whisking together the Greek yogurt, dried dill, garlic powder, onion powder, and lemon juice in a small bowl.
Remove the baking sheet from the oven, drizzle the buffalo hot sauce over the chicken and cauliflower, and toss with tongs to coat thoroughly.
Return the tray to the oven for an additional 5 minutes until the sauce is bubbly and the chicken is fully cooked through.
Serve the hot buffalo bites immediately with the chilled ranch dip on the side for dipping.