Cut the tops off the bell peppers and remove the seeds and membranes. Set aside.
In a large mixing bowl, combine the shredded chicken, buffalo sauce, softened cream cheese, half of the shredded cheddar cheese, chopped green onions, garlic powder, onion powder, salt, and pepper. Mix until well combined.
Stuff each bell pepper generously with the buffalo chicken mixture, pressing down to fill completely.
Place the stuffed peppers upright in a baking dish. If needed, you can add a little water to the bottom of the dish to help steam them while baking.
Cover the baking dish with aluminum foil and bake for 25 minutes.
After 25 minutes, remove the foil, sprinkle the remaining cheddar cheese on top of each stuffed pepper, and return to the oven for an additional 10-15 minutes, or until the cheese is melted and bubbly.
Remove from the oven and let cool for a few minutes before serving.
Notes
Place the stuffed peppers on a platter and garnish with fresh cilantro for a pop of color. Serve with extra buffalo sauce on the side for dipping!