Originally posted by K David Yeah, your focus is way off. Specifically with a portrait, the focus should be the dominant (in this case his right) eye or something else of important (fingers was a good suggestion.) The pose is good and your model is comfortable with your presence. Those are two difficult hurdles. The lighting is also good. Color is a much better version, IMO.
So when you focused the camera, was the image in the viewfinder focused on the ear or the eyes? If the image appeared properly focused in your viewfinder, then you need to try a few things starting with verifying your diopter adjustment is correct. If it is, then you may want to check that your sensor doesn't have any movement corrections (the K-5 allows you to adjust your sensors position along the SR axes). If the diopter and sensor are both okay, then you'd want to verify your lens and adjust the manner in which the camera interprets data from it. I forget how to do that because I haven't had to on any of my lenses (not bragging, just dumb luck.)
Alternately, if you used AF, then your AF may have done you no favors If the AF switched at the last second, then that could explain the lost focus. One thing for portraits that I've found works well, I keep the meter set to either spot or C-W and if I use AF I use only the central AF point. Then I (this is a bad habit) center the subject's face and crop if needed. That makes sure that the image is focused on the subject's face (or other focal interest point) and also that the meter sees the subject as neutral tone. That works for most situations.
I appreciate everyones comments. I see what you're all saying about the focus. I took this shot rather quickly so my focus point wasn't really set. Next time I'll focus on the eyes. Thanks everyone.