Yes I’ve only seen him do it when basking and it’s not constant. He’ll sit there with his mouth open for a bit and shut it if I go closer. Or he’ll climb down from basking after a while of opening and closing his mouth. I open his cage door and pretty much shoot the gun from standing right in front of cage. I have a t5ho 10.0 uvb and a 65 watt br30 flood for heat along with a regular household 25w bulb bc temps weren’t high enough. I just moved him into an xl cage so I haven’t gotten humidity up yet. After I mist humidity will go up to 49-50%. Without mist during regular daytime humidity is only 3”%. So not quite as humid as it should be. I’m going to maybe try adding plastic to a side or two. Here is current set up that I just moved him to on Sunday.