Yes, you can make Chicken Tinga in the slow cooker! Add 4 chicken breasts to the bottom of the slow cooker in a single layer and season as desired with salt and pepper. Cook and blend the sauce up to step 4, then pour this sauce over the chicken in the crock pot. Cover and cook 2 to 3 hours on LOW or 1 to 2 hours on HIGH until the chicken shreds easily using two forks.