Nikon D7000 Skin Tones Problem | Fuji S5 Comparison

First...all the D7000 pics look pretty bad and not typical in any way. Something is wrong.

It looks like WB is off or you have a filter on the lens. Turn ADL off untill you sort it out as ADL can indeed affect skin tones but in this case...more than just skin tone colors seem wrong. Did you change the WB presets or the Picture control defaults?

Have you tried looking at the pics with ViewNX2? This could be a LR issue as I've not seen D7000 pics this poor before. If you have one of the "bad" D7000 shots take OOC jpeg. Upload that pic here just as it came from the camera so we can see the EXIF and camera settings. If you do upload...be sure and go here http://www.dpreview.com/members/settings/profile
And under the "allow download of originals"  check  "Allow visitors to download full size original images from your gallery" That way we can download the pic to ViewNX2 and check the camera settings you used. That assumes you uploaded pics/files as they came from the camera vs any change in Lightroom or the like.