Cut the chicken into bite-sized pieces and season with salt/pepper as desired.
Place the flour in a zip lock bag and drop the chicken pieces into it. Seal the bag and shake to coat. (*Feel free to omit the flour ingredient for a healthier spin)
Heat 4 tablespoons of oil over medium and heat and cook the floured (or un-floured) chicken for a few minutes on each side.
Mix firecracker sauce ingredients together in a large bowl. Remove chicken from the skillet and drop into the bowl, mixing around to coat thoroughly.
Place the chicken and sauce in a baking dish (the size is not important, just large enough to hold the chicken) and cook, covered, for 30 minutes.
Scoop 2-3 tablespoons into the middle of each piece of lettuce. Sprinkle the top of each with diced peanuts and enjoy!