hey scott,
the nostils are there they are just not noticeable. Sooner of later you may see white stuff in them - this is only salts he is releasing. Look closely you can see them. here i that cool site that iso posted and you can see the location
as for the gaping they do it to cool off (sort of like a dog panting, and when they see a predator or other cham (Luna saw her reflection in a mirror and got all puffy and gaped!
Everything is normal 
lele
>>I'm looking at my cham today and don't see any nostrils. His mouth is always closed, how does he breathe? Also, he'll keep his mouth open when basking, why does he do this? these seem like they should have obvious answers, but i am at a loss. thanks
>>
>>Scott
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0.1 veiled - Luna
0.2 green anoles (Jaida, no name)
0.1 brown anole - Jamaica
0.2 house geckos - (still no names)