Zesty BBQ Chicken

6 frozen skinless, boneless chicken breast halves
1 12-oz bottle BBQ sauce
½ cup Italian salad dressing
¼ cup brown sugar
2 Tbl. Worcestershire sauce

Place chicken in slow cooker.
Mix other 4 ingredients and pour over chicken.
Cover and cook on low 6-8 hours, or on high 3-4 hours.
Shred, serve and enjoy!