Jackson's not eating

Hi all,

Background: My jacksonii xantholophus is about 3 years old (I acquired him about 7 months ago from someone who didn't want him anymore) About two weeks ago, he started only taking superworms and now he's not eating any feeders at all (I still only offered supers sparingly). I've tried to entice him with dubia, crickets, adult BSF (my veiled loves to catch them), but no luck. Hornworms and butterworms are on the way. He's alert, drinking, his grip is strong, his poops seem normal though they've been less frequent. He seems to be wandering the cage more than usual and walking around on the bottom. Nothing seems amiss in his mouth and there's no odor.

Diet: Mostly dubia with crickets, hornworms, supers, silk, butterworms, etc.
UVB: T8 5.0 (5 months old), natural light outdoors when the weather permits.
Heat: 60w bulb, ambient temps in house about 68 F.
Watering: He drinks from a dripper and has a misting system that mists for 2 minutes a few times a day. I have a humidifier running on its lowest setting into his cage in the winter as the heat makes the house very dry.
Supplements: small amount of herptivite 1x a month, calcium without d3 1x a week, calcium with d3 2x a month.

Here are some photos of his set up and from him today:
https://imgur.com/a/pPLG0
(he doesn't gape normally, but hates the camera)
(set up isn't as dark as it looks in the picture)

does this warrant a vet visit or is there something else I can do?