Preheat your oven to 400°F (200°C).
In a small bowl, whisk together the teriyaki sauce, honey, soy sauce, rice vinegar, and red pepper flakes. Set aside.
On a large sheet pan, arrange the chicken slices, pineapple chunks, bell peppers, and red onion. Drizzle with olive oil and toss to coat evenly.
Pour the teriyaki mixture over the chicken and vegetables, making sure everything is coated.
Bake for 20-25 minutes, stirring halfway through, until the chicken is cooked through and the vegetables are tender.
Remove from the oven and serve the chicken and vegetables over cooked rice. Garnish with chopped green onions and sesame seeds. Enjoy your sweet and savory Hawaiian-inspired meal!