If all you have on hand is frozen chicken and no time to thaw it before cooking you can indeed use frozen chicken to make buffalo chicken dip. Just add the frozen chicken to the pressure cooker, add 1/2 cup of chicken broth or water and the buffalo wing sauce and cook for 15 minutes on HIGH pressure. The addition of a little extra liquid ensures that the frozen chicken meat cooks thoroughly and does not create any error codes on your pressure cooker.