Hypothetically speaking, if you do get your BP to eat raw chicken and it is nutritionally acceptable that is all well and good but, with a BPs tendency to imprint on one food type I wouldn't even try it.
If something were to happen where you couldn't care for your snakes and couldn't pass on the necessary information to the new owner what kind of havoc would that be?
I don't think you were asking permission or if it is a good idea, just looking for information.
My two cents.
Mike