thanks for the help guys, but I think I have it taken care of. One of the pendants had a wire that the insulation had cracked and it was shorting out on the metal (good thing I wasn't touching the pendant!), so I replaced that wire. I think it was a combination of one bulb burned out, one pendant shorting out, and it tripping the GFCI that made me think both of them were bad. Right now I have both lit up (one new bulb, one still the old one) and all seems to be fine. Again, thanks for your help.