Pretty sure it's still Emily Bauer/Emily Jenness voicing her, but in a different tone than in the earlier BW eps.
I get that the whole "Unova Jenny is diff from the other Jenny" thing, but never understood why she received a different seiyuu and VA from the ones in Kanto-Sinnoh. Maybe because since Unova is more based on the USA, whereas Kanto, Johto/Jouto, Hoenn/Houen, and Sinnoh/Shinou were based off of the different parts of Japan like Tokyo Region, Kansai, North part of Japan, etc? IDK.
Maybe since Unova Jenny looks more like a dike or a lesbian? JK.
Honestly, my favorite Officer Jenny voices were Lee Quick (4Kids) and Emlyn/Emily Morinelli (TPCi). I have to agree E. Bauer is really flat in the role to me, but I don't really know how the seiyuu in Japanese plays the Isshu Officer Jenny, so to be fair I can't judge her based on that little to go on. Personally, I don't like her voice that much, either.
On the other hand, Colress' voice is simply fantastic. TPCi really outdid themselves on that one. I can't think of a single thing I don't like about Eli James' performance. He's perfect for the role!
I'd like to add he did a pretty awesome Damian in the dub of BW116. It was a bit different from Maddie's version, but close enough that I still enjoyed the performance he did a lot. :D