Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper for easy cleanup.
Cut the chicken breast into bite-sized cubes and break the cauliflower into small, uniform florets.
In a large mixing bowl, combine the chicken and cauliflower with the extra virgin olive oil, sea salt, black pepper, and garlic powder, tossing until every piece is evenly coated.
Spread the mixture onto the prepared baking sheet in a single layer, ensuring enough space between pieces to allow for proper roasting.
Roast in the oven for 20 to 25 minutes, or until the chicken is cooked through and the cauliflower edges are slightly charred and tender.
While the tray is in the oven, prepare the ranch dip by whisking together the Greek yogurt, dried dill, dried chives, and lemon juice in a small bowl until smooth.
Remove the baking sheet from the oven and transfer the roasted chicken and cauliflower back into the mixing bowl.
Pour the buffalo sauce over the hot ingredients and toss gently until the pieces are thoroughly drenched in the spicy sauce.
Serve the buffalo bites immediately on a platter with the chilled ranch dip for a satisfying, high-protein meal.