I have my own chipped windshield story...
I had a rock almost sent through my windshield by the local gravel truck, luckily no one was in the passenger seat and no one got hurt. I had the top down and really didnt notice the windshield until I stopped, by that time the truck was long gone. Took it to Fastglass to get it replaced. 120 bucks later, I was on my way home with a brand spanking new windshield. Not even 5 miles down the road on the freeway, there was road construction. A rock got flung up by a car in front of me, putting a bb size chip directly in front of the driver seat.
Sorry to hear about your chipped winshield! Im just glad that for me, the flat YJ winshield is a fairly cheap replacement! Id assume the JK windshield is a bit more.