Slice the Chicken breast into 1/2 inch squares or strips, season with salt and pepper, and dredge in flour. Lightly brown the chicken pieces in a saute pan on a med-high flame. Set Aside. Saute the sliced onion after the chicken is done until light golden brown. Place the chicken pieces back into the pan and mix evenly. In a sauce pan combine the rest of the ingredients aside for the pepper and bring to a boil. Lower the flame and simmer for 10 minutes. Pour the sauce over the chicken and onions and mix well.
Add the sliced pepper and cover the chicken and let it cook for 5 minutes stirring continuously. Then let it sit for another 20 minutes in the juices before serving.