Roll the chicken in the flour to coat. Melt the butter in a large heavy skillet over medium heat. Add the chicken and brown on both sides, about 7 minutes per side. Remove the chicken to a plate and keep warm. Add the remaining ingredients to the skillet and mix well. Return the chicken to the skillet and simmer for 3 to 5 minutes. Turn the chicken and simmer for another 3 to 5 minutes, with the pan covered, or until the chicken is cooked through.