In a large skillet, heat the sesame oil over medium-high heat. Add the diced chicken and season with salt and pepper. Sauté until the chicken is cooked through and slightly browned, about 5-7 minutes.
Add the minced garlic, grated ginger, and chopped red onion to the skillet. Cook for an additional 2-3 minutes until the onions become translucent.
Pour in the soy sauce and honey, stirring to coat the chicken evenly. Let it simmer for another 2 minutes, allowing the sauce to thicken slightly.
Remove the skillet from heat and fold in the diced mango and bell pepper. Gently mix until all ingredients are combined, ensuring the mango stays intact.
To serve, take a lettuce leaf and spoon a generous amount of the mango chicken mixture into the center.
Drizzle with lime juice, garnish with fresh cilantro, and sprinkle with crushed peanuts if desired.
Roll the lettuce around the filling or fold it like a taco, and enjoy!