Creating Hawaiian Pineapple Chicken is simple if you follow these easy steps:

1. Prepare the Marinade: In a bowl, whisk together soy sauce, brown sugar, ketchup, rice vinegar, minced garlic, and minced ginger until well combined.

2. Marinate the Chicken: Place chicken breasts in a large resealable bag or a shallow dish. Pour the marinade over the chicken, making sure all pieces are well coated. Seal the bag or cover the dish and refrigerate for at least 30 minutes.

3. Heat the Pan: In a large skillet or wok, heat sesame oil over medium-high heat.

4. Cook the Chicken: Remove chicken from the marinade (saving the marinade for the sauce) and add them to the hot skillet. Cook for about 6-7 minutes on each side, or until golden brown and cooked through.

5. Add Vegetables: Once chicken is cooked, add sliced red bell pepper, green bell pepper, and onion to the skillet. Stir-fry for about 3-4 minutes or until just tender.

6. Prepare the Sauce: In a small bowl, mix cornstarch and water to create a slurry. Add the reserved marinade to the skillet, followed by the pineapple chunks. Stir in the cornstarch mixture to thicken the sauce.

7. Simmer: Allow the sauce to simmer for about 3-5 minutes until it thickens and everything is heated through.

8. Serve: Remove from heat and garnish with chopped green onions.

9. Enjoy: Serve your Hawaiian Pineapple Chicken over a bed of cooked rice for a delightful meal.

These straightforward steps will bring the tropical flavors of Hawaiian Pineapple Chicken to your dinner table effortlessly.