Preheat the Oven: Preheat your oven to 450°F (232°C) and line a baking sheet with parchment paper.
Make the Batter: In a bowl, whisk together the flour, water, garlic powder, onion powder, paprika, salt, and pepper until smooth.
Coat the Cauliflower: Dip each cauliflower floret into the batter, allowing any excess to drip off. Place the coated florets on the prepared baking sheet in a single layer.
Bake: Bake the cauliflower for 20-25 minutes, turning halfway through, until golden and crispy.
Buffalo Sauce Coating: In a separate bowl, mix the baked cauliflower with buffalo sauce and olive oil until fully coated.
Return to the Oven: Bake for an additional 10 minutes until the sauce is bubbly and caramelized.
Serve: Remove from the oven and serve hot with celery sticks and your favorite dipping sauce.