These next few weeks are going to be very busy for most people. There's always a need for quick, and simple entrees that you can put together in a jiffy, and that don't cost a bomb to put together. Quick and easy has to be better than a ready meal. You can have this delicious chicken dish on the table in about 20 minutes, so that's not bad at all.
I always have chicken thighs and breasts in the freezer. There is no reason you couldn't use boneless breasts for this. Just know that they will cook a lot quicker, so you may have to remove them and keep them warm while you thicken the sauce up. Breasts cook in about half the time.