Zesty Slow Cooker BBQ Chicken - only 5 simple ingredients! You probably already have them in the house! Chicken, BBQ sauce, Italian dressing, brown sugar and Worcestershire sauce. I love all of these ingredients and they taste great combined into one easy dish! Feel free to use frozen chicken breasts in this dish. Make a ton, so it's great for a potluck! Serve chicken on buns, nachos, baked potato or on top of a salad. Everyone gobbled this up!