Board Thread:Episode Discussion/@comment-24993958-20161210130927/@comment-28288412-20161211014324

I reckon Tyrian could tell that Jaune was in a bad spot mentally, even worse than the others and took special interest in that as my speculation.

Could be to exploit later for amusement, or to discover why so that Jaune could be manipulated to joining Salem in exchange for Pyrrha coming back (an empty promise). Jaune biting in the latter scenario is unlikely though, but I can see trying to do it.