So those of you who play a Jedi Consular may have noticed that your companion, Theran Cedrax, occasionally shaves his customary goatee to have a straight-up, no frills, down-home Brostache. With a capitol 'B'.

This is a bug.

It comes from equipping a chest piece with 'puffy' collars. This same bug may happen with your character, so start removing clothing items if you notice any change to your appearance.