totally agree wtih Weeminx
Like I say, each to their own but realistically....
It isn't the wild that the cham lives in - it is a captive environment
Wild Yemens are arboreal and very rarely go to ground level unless they are sick or females laying eggs
In all fairness, as a keeper you have a duty of care to ensure their environment poses minimal danger to them.
If you prefer the orchid bark then you could try cup feeding your cham using a high branch to hang the feeding cup from - high enough so the crix can't jump out, yet shallow enough for your cham to reach it's tongue into.
Also, if keeping the bark, i would maybe keep feeds to when you can supervise and remove any uneaten food before you turn the lights off etc
