I had a similar problem when I upgraded to Android Studio 1.4 . My font was broken. I thought about this due to an OS update ( OS X El Capitan ). After trying a lot of different things, I found that this is a problem with the JDK.
Now you can use the higher version (> 1.6) of the JDK. You just need to install JDK 1.6, which by default is intended for rendering fonts in Android Studio . If you are using OS X, then download JDK 1.6 from here and install it. To check which version of java you are using, run this command.
cd /Library/Java/JavaVirtualMachines && ls -l
After installing JDK 1.6. Restart Android Studio. There you will see your beautiful smooth font. Greetings.
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