Hope this helps someone.
I got the check engine light this morning on my 2007 Honda Pilot (37K miles). Stopped by Advanced Autoparts to get the error code/messages. It was P0300-P0306 Random Cylinder Misfire and Misfiring Cylinders 1-6. I took it to the dealership and received this response after they ran their diagnostic:
"Was informed by tech-line that problem is under investigation and there is no fix at this time. Was advised to erase codes and if problem persists to adjust rear valves tight and front valves lose."
So it sounds like a known issue. Tech advisor told me to come back in if the light check engine light comes back on and that any repairs would be covered by warranty.
I will update if anything else happens.