Whisk all the sauce ingredients together in a small bowl. Pour about 3/4 of the sauce into a bowl with the ground chicken and peanuts. Stir to combine and marinate for 15 minutes.

Soak the rice noodles in a large bowl of water while the meat is marinating. When the noodles are softened, drain and rinse with cold water. Cut into small pieces.

In a large skillet, heat the sesame oil over medium heat. Add the meat and peanut mixture and sauté for 10 minutes or until cooked through.

Add the noodles to the skillet and stir-fry for another 5 minutes or until soft, adding a splash of water, oil, soy sauce, oyster sauce, or lime juice to moisten the pan as necessary.

Remove from heat, scoop mixture into lettuce leaves, and top with cilantro, green onions, peanuts, and the reserved sauce.