In a small bowl, whisk together soy sauce, honey, rice vinegar, grated ginger, and minced garlic to create the teriyaki sauce.
Heat sesame oil in a large skillet or wok over medium-high heat.
Add ground chicken to the skillet and cook until browned and crumbled, approximately 5-7 minutes.
Stir in water chestnuts and red bell pepper, cooking for an additional 2 minutes.
Pour the teriyaki sauce over the chicken mixture and simmer for 1-2 minutes until the sauce thickens slightly and coats the chicken.
Spoon the chicken mixture into individual butter lettuce leaves.
Garnish with sliced green onions and toasted sesame seeds before serving.