No you can't, but there have been a few times I have seen it on TE's buffet, but not in the last few years. (unless they have had it when I was not there)
When Crockett's Tavern was actually a restaurant many years ago, you could basically order the same food as the HDDR, and it had other things on the menu including steaks, fajitas, etc. Back then it was a sit down, full service restaurant and was contained on the lower level and operated separately from TE.
As far as I know, the only way to get a child's or reduced menu option, is if you have one of those cards, issued from a physician, after you have some type of Lap Band or other bariatric surgery.