I am guessing on this as FOV issues caused some problems on some UI's when it is set sub-optimally in past games. Desi has a thread in the PC Hardware section that details how to fix this in the INI. However, you can make adjustments in the console for testing before you mess around with the INI file.
FOV adjustment
Have found no way to change FOV outside the game so far (only the fov n console command like Oblivion). Changing the FOV via the in-game console carries over between reloads and sessions. Here are some comparison screenshots. They were taken at 1920x1080, and there wasn't much fisheye at 100 degrees. I settled at 95 degrees.
Default FOV (I'm guessing around 60-70)
80 degrees
90 degrees
100 degrees.
Note, if you open the console, Achievements will be disabled for that session. Exiting the game and reloading it will re-enable achivements. So, once you find a value that works, if this works, then make the change in the INI.