I like it. I am struck by the fact that the dark side of the face is facing the camera and the bright side is facing away. It's different.
As mentioned, that is "short" lighting. It works well to make people look slimmer because it lights a smaller portion of the head. The opposite is "broad" lighting, where the light comes from the other side and basically lights up the whole head and some of the face.
Short lighting is also the style that lights up the 'mask' of a person's face...as opposed to lighting their head. So it's probably not as 'different' as you might think.
It really stands out in this portrait because of the deep ratio. The shadows are very dark compared to the lit side of the face, so the lighting pattern pops out at you.
I agree that the eyes could use a bit more exposure.
Well Done.