Preheat oven to 375°F (190°C). Place bell peppers in baking dish, drizzle with olive oil, season, and set aside.
Heat olive oil in skillet, cook chicken until browned and cooked through. Set aside.
In same skillet, sauté onion, garlic, and ginger 2-3 mins. Add carrots, cook 2 more mins.
Return chicken to skillet. Add rice, pineapple, and teriyaki sauce. Heat through 2-3 mins.
Spoon filling into peppers, packing gently.
Cover with foil, bake 25 mins. Uncover, bake 10-15 mins more until tender.
Sprinkle with green onions and sesame seeds. Serve warm.
