Zesty Slow Cooker Chicken Barbecue

6 frozen skinless, boneless chicken breast halves

1 (12 ounce) bottle barbeque sauce

1/2 cup Italian salad dressing 

1/4 cup brown sugar

2 tablespoons Worcestershire sauce

Place chicken in a slow cooker. In a bowl, mix the barbecue sauce, Italian salad dressing, brown sugar, and Worcestershire sauce. Pour over the chicken.

Cover, and cook 3 to 4 hours on High or 6 to 8 hours on Low.