Dear Agent Manners:
I have my first in-person agent pitch coming up soon. If the agent doesn’t seem to be interested in the project I’m pitching, is it appropriate to pitch a different one?
In the event that there is time remaining for a second pitch, why don’t you simply ask the agent if they’d like to hear another. If they say yes, go for it. If they demur, then just politely thank them for their time.