Add the chicken broth, scraping up the browned bits from the bottom of the pan. Cover and cook on a low simmer for 20-25 minutes (depending on the size of your chicken pieces). When the chicken is cooked through (165°F if you use a thermometer, or if the juices run clear, not pink when the thickest part of the thigh is pierced with a knife) remove the pan from the heat. (If you want, you can also keep cooking the chicken until it begins to fall off the bone, which may take another 30 minutes or so.)