Wash the bell peppers, cut the tops off, and remove seeds and membranes.
Heat olive oil in a skillet over medium heat, add ground chicken, season with salt and pepper, and cook for 5-7 minutes until browned.
Stir in cooked rice, pineapple chunks, and teriyaki sauce into the skillet and cook for an additional 3-5 minutes.
Stuff each bell pepper with the chicken and rice mixture and place them upright in a baking dish.
Preheat oven to 375°F, cover the baking dish with foil, and bake for 25 minutes. Remove foil, add cheese, and bake for an additional 10 minutes.
Let cool for a few minutes before serving.