Stir in 1 tablespoon of cornstarch that's been mixed with 2 tablespoons cold water. Slow Cooking chicken breast in crock pot Teriyaki Chicken. Replace the lid and continue to cook the chicken. As the Crock-Pot site notes, "It's called a slow cooker for a reason! Sprinkle salt, pepper, garlic powder and Italian seasoning over the chicken and potatoes, then toss to coat well. When you double it, do you double the liquid as well?