This is a new issue to me. I'm using Repetier and Cura to slice. I never had issues prior to this. What is throwing me off is the issue (Which appears to be under extrusion) only occurs on the front right side of the print (Has happened the last two prints) and it went away completely during one print for a good 20-30 layers. The other 3 sides are perfect. I have hundreds of prints on this printer and it's never occurred before and the fact that it is inconsistent has me baffled. Any input would be appreciated.
I'd probably start with ensuring the bed is level (you can use a bubble/spirit level if done manually) and/or move any fans in the room as those could cause inconsistent cooling rates causing it to warp (among other issues).
To make troubleshooting easier on yourself and if you are able, try to only print 10 layers or so. This can be done by modifying the G-code by ending the print at a certain height, though some slicer software have a setting for that (I can't remember at this moment which slicing software allows this to be done easily).