I can see where it\'s possible to change editor fonts, but the project panel font seems unreasonably large. Overriding the default fonts only changes the upper path bar and
UPDATE-2016: it is possible, see this
It's not possible, unfortunately, please watch/vote for the bug.
UPDATE: In the later versions global font/size setting under Settings
(Preferences
) | Appearance
also controls the project view tool window font, but there is still no way to control the project view font individually, without changing the font/size of the other UI elements.