I modified this screen protector from Amazon. I laid the original screen protector on top of this anti-glare screen protector and used a cutter to cut off the extra pieces. It's not perfect but it does the job
Amazon.com: Tech Armor Amazon Kindle Fire HD 7h (2012 Release) Premium Antiglare Screen Protector with Lifetime Warranty [3-Pack]: Kindle Store
Amazon.com: Tech Armor Amazon Kindle Fire HD 7h (2012 Release) Premium Antiglare Screen Protector with Lifetime Warranty [3-Pack]: Kindle Store