Hi, my beardie coughed a little bit while on me.. I would say only three times.
I do suspect it's a URI but I don't know anything that could cause it? His humidity is usually at 10-52% (only that high when he's shedding or there's a storm), he's on newspaper, his basking temp is 107
If it was just heavy breathing temporarily I don't think it's something to worry about. If you don't see heavy mucous buildup around the nose and mouth and lethargic behavior, I doubt it's an infection and may have just been some heavy breaths or even some burps.