In a large skillet over medium heat, add sesame oil. Once heated, add the minced garlic and grated ginger, sautéing for about 30 seconds until fragrant.
Add the ground chicken to the skillet and cook until browned, about 5-7 minutes, breaking it apart with a spatula.
Stir in the diced red bell pepper and shredded carrots, cooking for another 3-4 minutes until the vegetables are slightly softened.
In a small bowl, mix together peanut butter, soy sauce, honey, and sriracha until smooth. Pour this sauce over the chicken mixture, stirring well to combine. Allow to cook for an additional 2-3 minutes to heat through.
Remove from heat and stir in the chopped green onions and bean sprouts.
To serve, spoon a generous amount of the spicy peanut chicken mixture onto a butter lettuce leaf.
Garnish with chopped cilantro and crushed peanuts for added flavor and crunch.