Alright, since this post, here's what I've done different:
-Moved him into a larger cage
-Heavier and longer misting sessions
-Began feeding hornworms today (Managed to find some small ones.)
-Feeding on a daily basis. (10-15 crickets and 3 hornworms a day)
Everything about him is still fine though... he's active, showing colors, eating, and drinking... I just don't understand the size!