Strip of game is cut off in preview window on monitor, but appears in the Oculus

I'm having an issue where part of my game is cut off in the preview window on a computer monitor (see blue strip in photo, right). The same portion of the scene is not cut off in the Oculus itself.

How do I fix this so the preview window reflects everything as it is set up in the Oculus?

I am using Unity 5.3.5.

Thank you!