Combine 1/4 cup soy sauce, 1/4 cup honey, 2 tablespoons rice vinegar, 2 minced cloves of garlic, 1 teaspoon grated ginger, and 1 tablespoon sesame oil in a mixing bowl and mix well until smooth.
Add 4 pieces of boneless, skinless chicken thighs to the marinade, ensuring they are well coated, cover the bowl, and refrigerate for at least 30 minutes.
Preheat your oven to 400°F (200°C).
On a sheet pan, arrange the marinated chicken thighs alongside 1 cup of sliced bell peppers, 1 cup of sliced red onion, 1 cup of sliced zucchini, and 1 cup of pineapple chunks.
Pour any remaining marinade over the colorful vegetables.
Bake in the preheated oven for 25-30 minutes, or until the chicken is cooked through and reaches an internal temperature of 165°F (75°C) and the vegetables become tender and slightly caramelized.
Remove from the oven and let it rest for a few minutes.
Garnish with 2 tablespoons of sliced green onions and sprinkle with sesame seeds if desired before serving.
Serve warm and enjoy your delightful Hawaiian Chicken Sheet Pan meal.