Agents' pet peeves

I haven't been querying for the last couple of months, focusing mainly on re-writing, and summer stuff. This morning, I went over to check out the guide to literary agents blog and found this post. In it, different agents explain what turns them off in a first chapter. Quite a few of them are familiar: too much exposition/world building/telling, clichés, dream scenes, but I found a few that are new to me, such as characters named Isabelle who go by Izzy.

Might be fun to see if any of the pet peeves mentioned are in your first chapters.