Zesty Slow Cooker Bbq Chicken

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 barbeque 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