In a bowl, mix soy sauce, fish sauce, brown sugar, garlic, and ginger to create a marinade.
Add chicken pieces to the marinade and let it sit for 20 minutes.
Heat vegetable oil in a skillet over medium heat.
Cook marinated chicken pieces until golden brown and fully cooked.
Add bell peppers and sauté for 2-3 minutes until slightly softened.
Sprinkle with green onions and sesame seeds before serving.
Serve with lime wedges on the side.