Egg shape and size?

[77horses]

One of our Red Star hens laid a strange egg; it's normal sized, but it's more round than circle. In fact it's almost a full circle. I'm planning on incubating it this week. Will the roundness of it effect the chick development and hatching?
Thanks!

 

[ginbart]

I had one like that once and someone told me to check it after about 5 days and make sure I had the air cell at the top.

 

[FenDruadin]

I've set a couple round eggs. Definitely check the air cell as soon as it becomes visible and get it in there the right way up (air cell at top).

Good luck!