I have always free ranged feed my Yemen and he has always manged to find his food as there is never any food remaining. If you going to use crix then perhaps it's a good idea to use a cup as crix can hidaway but as the main staple of diet i use is Locusts this is not a problem as those insects are very lively and heads to the top of viv. I also do not always stick to the food size guide as I try to give a variation of the types and size of foods he has.
The guy who I am buying my panther from suggets i use a small exo terra viv but using such a small enclosure sists uncomfortably with me so I have yet to decide the best way forward.
again, as i say these are merely suggestions that i get from other experienced keepers that has kept many chameleons successfully.
It is indubitably not law abiding. But, there is certainly a good reason behind all that suggestions.
Take things into consideration on what best for your chameleon and, base on that, do whatever you need for the longevity of your pet.
If you decided to feed your chameleon with over-sized feeder insects (excluding soft bodied insects i.e: silkworm) as experiments, it is certainly up to you. But, just don't be surprised if your chameleon get impacted as a result of that.
You can certainly try putting your chameleon in a small glass enclosure and find out yourself the reason why we told you to steer away from that kind of cage.
Everybody here has slightly different methods in caring for their chameleons.
There is no the "only" way.. but there is a "preferred" way. Many experienced people here based their care suggestions on trial and errors in hope that many will have no need to undergo the "errors."
Off course, in the future, the more we find out about chameleons, the more we will be able to "fine tune" our care technique.
Take everything into consideration.. trust me, there is a method behind all this madness.
I think this thread has stray a bit too far from the original intention.
So, to answer your Q, Cwil.
Adding more foliages will perhaps help a bit to make him relaxed.
Cheers