Loss of appetite in baby bearded dragon

Question
Hi,
I just purchased two baby bearded dragons 3 days ago. The first day and a half in their new home, they ate as to my knowledge "normal." A few crickets and some worms. I've noticed 2 days after having them that one of the babies are no longer eating, and she just lays around basking with her eyes closed. We've tried electrolyte and appetite stimulant, but she did not want to eat it. We've also tried feeding her in a different cage and not handling her as much., but both were non successful. They're temperature is 76 degrees F and their humidity level is 28. Any suggestions???? Or do you feel this is something for the vet to look at?

Answer
Hello Jessica,

Are all 3 dragons housed together?  How large are they?  
What type & brand of UVB lights are you using?  Is it a flourescent tube bulb or a compact or coil?  What kind of basking light are you using, a bright white light or a colored light?
What type of thermometer are you using?  A stick on thermometer, a digital probe or a temp gun?  
The basking temps need to be around 95-110 & the cooler end around 78-82.
The crickets need to be no larger than the space between the eyes to avoid impaction.
What type of substrate are you using?

Tracie