There should be an option to change the fonts the game uses in the config.ini
The fonts that are recommended in-game are monospaced (Characters have equal width), just like the current font (Fixsedys). This is just a recommendation, the player may still chose a font that isn't monospaced but then it would look awful in-game.
Examples of Monospaced fonts are Courier, Lucida Console, and many others.
http://en.wikipedia.org/wiki/Samples_of ... _typefaces