The bulb has a plastic clear cover. That cover can just be carefully removed using a screwdriver. It's held in by a metal bracket. After you remove the cover. You'll just need to replace the bulb and then re-install the cover and bracket.
I was replacing a range oven hood, so I pulled the oven away from the wall but left it plugged in. I removed the old oven hood, which had an exhaust pipe that was still mounted through the cupboard. While I was preparing the new oven hood the exhaust pipe fell out of the cupboard and cut the oven wire in half. I was able to find the part number on the existing cord and looked up on line. I ordered the part using 3-5 business days and it showed up in 2 days. I was able to attach the new cord, which had an easy clip plug, and secure back to the stove. Very easy and very inexpensive to do.