Tomi Girl has had small eggs, oblong egg, round eggs... before getting her.
Casey a few weeks back had a large round egg. Less than 24 hours later, she laid a second egg. I'm pretty sure the second egg was normal, but being it fell and cracked, I can't be entirely sure... I think the second egg may have been scared out of her, hence being "laid" so early after the first one!
Can't say I've seen one like Sweat Pea's latest egg though...