You'll probably notice that BobUI is using a new font. Well this font is called OpenDyslexic it's a font that improves font readability for those who are visually impaired. Or in my case for those who spend all day looking at a computer screen reading walls of text.

It makes it easier for me to read text in game. And BobUI is my personal UI. Plus I found out today that I have some pretty bad eyes and had to buy glasses today.

TL;DR
Don't like it you don't have to use it. BobUI's old font was Arial Narrow.