Throughout a dozen-year chicken hobby I feel fortunate to say that I have only gotten pullets. :p I do now have a rooster, a RIR/Amauracana, who is a sweetheart. We have him by choice. My ten-year old daughter, Annie, has raised him very well.
Yeah, one of our Buffs has been laying these "bumpy" eggs. The bumps often correspond with a "spot" on the inside of the egg. They are still good eating, though. I am curious as to what's up with them?