Step 1

In a shallow dish or bowl, combine flour, 1/2 teaspoon salt and ground black pepper. Coat chicken breasts with flour mixture. Melt butter in a large skillet over medium heat, and brown chicken on all sides. Remove from skillet, and drain on paper towels.

Step 2

In the same skillet, combine the tomatoes, water, brown sugar, vinegar and Worcestershire sauce. Season with salt, chili powder, mustard, celery seed, garlic and hot pepper sauce. Bring to a boil; reduce heat, and return chicken to skillet. Cover, and simmer for 35 to 40 minutes, or until chicken is tender, no longer pink and juices run clear.