My car does the same thing. Goes away in a few seconds. I highly doubt it's no oil on the chain. It would do this in the summer too then, when the motor gets hotter, making the oil thinner. I don't worry about it.

2000 CSVT Silver Frost: #942 of 2150 HID Projectors and Fog Light Mod, Optomized TB, MSDS headers 2003 Silverstone Z