TURNING BLUEISHGREY! HELP

[therrien]

I purchased an argentina b and w tegu baby a few weeks back and she was living perfectly healthily. I went on vacation last Sunday (she had just sheded) and just got back home (we had someone turning her light on/off and feeding her). I went straight to her cage to see if she was ok and she is discolored, all the green is gone, and she seems really yellowish/dirty and her skin appears to be shedding again. Di tegus shed every couple of days? Anyway, I peeled back some of the skin and her back skin underneath is blueish/grey. She ate a bunch of crickets just now. Is she sick? What's going on?

 

[therrien]

She also appears to be missing two scales behind her nose, between her eyes.

 

[Bubblz Calhoun]

They lose the green color as they grow and shed. But pics would help determine if there's something else going on.