Preheat your oven to 375°F (190°C) to ensure it's ready for the stuffed peppers.
Prepare the bell peppers by slicing off the tops and discarding the seeds and membranes. Arrange the peppers in a baking dish, placing them cut side up for even cooking.
Heat a large skillet over medium heat and add the olive oil. Once the oil shimmers, toss in the diced red onion, celery, and grated carrots. Sauté for approximately 5 minutes, stirring occasionally, until the vegetables have softened and become fragrant.
Add the ground chicken to the skillet. Cook while breaking it apart with a spatula, until the chicken is browned and fully cooked, about 7-10 minutes.
Stir in the cauliflower rice along with the hot sauce, garlic powder, onion powder, smoked paprika, salt, and pepper. Mix well to ensure that all ingredients are evenly coated and heat through for an additional 3-4 minutes, allowing the flavors to meld.
With your filling ready, carefully spoon the buffalo chicken mixture into each prepared bell pepper, ensuring to pack it in lightly for optimal filling.
Cover the baking dish tightly with aluminum foil to trap moisture and bake in the preheated oven for 25 minutes.
After 25 minutes, remove the foil and continue baking for an additional 10-15 minutes, until the peppers are tender and the tops of the filling have formed a light golden crust.
Once done, remove the baking dish from the oven and allow the stuffed peppers to cool for a few minutes. Finish by garnishing with freshly chopped parsley or cilantro before serving for an added burst of flavor and color.
Notes
Serve on individual plates with extra hot sauce for an added kick!