I fixed the issue today. The fender was closer to the door because the person that installed my ZR1 side skirts drilled the front most bolt hole slightly too far forward and it was pulling the fender back as the bolt was tightened. So I had to drill another hole and correct this error. Can't even tell I had to "modify" the original install and it matches the passenger side now! Excellent!
ANYWAY... so, for people who find this thread later.. I jacked the car up and there are 3 7mm bolts that need to be loosened. There are also 2 10mm bolts that I loosened as well that hold a plastic cover that goes from the fender to under the body. With these loose I was able to move the fender in to the correct position and tighten it all back down.