Bearded dragon eggs w/o shells, and a question on an ex-stud.

So I work at my university in the science department. Some of you may have picked up on this, but there's a former professor of the school who kept a lot of reptiles there (being that he's a herpetologist and all...), and atm his 3 bearded dragons (still in need of homes, I think) are still living there whilst he organizes his life and moves out, and for now they're part of my job. Two of them, a breeding pair, are kept in the same enclosure at all times; mostly for convenience, moreso than breeding. Today the female laid a whole 1 egg & defecated at the same time while I had her out of the enclosure to clean and replace newspaper etc, and the egg is like a little blob of cream colored jello. It doesn't have a shell.

Apparently last time she clutched about a month ago none of those eggs had shells either. I'm in limbo waiting for the owner to get back to me on what to do, but I am curious - I've separated the male from her and made a temporary damp nest for the single egg (then stuck it in a warm place); why doesn't it have a shell? Why did she only lay one and go back to basking? Will the egg hatch or die?

Second part is much shorter: there is a male adult dragon who was adopted as an ex-stud. Since he used to be a full-time breeder he was in pretty poor health but he has since thrived; he's become extremely territorial, picky, and stressed by any approach or noise (although he calms down once you pick him up). He refuses to eat greens or food pellets, which are his only options right now...ideas?