Hi Drew,
Chams will often excrete built up salts (from water) thru their nostrils. Nothing to worry about. However, if you have only had him for a few days and are moving him into a smaller cage(?) you may want to post your setup (lights, feeders, supplements, temps, humidity, cage specs, etc.) to see if all is OK in your new Cham Land 
lele
>>I just changed his cage to a smaller one. When i was checking on him i saw a white flake over his nostril so i just thought he might be starting to shed. But i went back and on both nostrils is like, i dont know powder of the nostrils. Is this from too much calcium. Ive only had for a day now so it couldnt be from me. Should i take it off. Can he breathe?
>>
>>
>>Please help
>>
>>Thanks
-----
0.1 veiled - Luna
0.2 house geckos - Gaia & Tia (both MIA 
0.2 felines - Kyndra and Líta
1.0 African Clawed Frog (for summer)
0.5 Mad. Hissers (for summer - all girls, no little ones, whew!)