NO...if this came from a non-blue egg there is not way it could be a Cream Legbar mix. Cream Legbar Hens lay blue eggs so if it was a non-blue egg then for it to me a mix the flock sire would have to be a Cream Legbar. Cream Legbar males are double barrer so both the male and females from a cross will come out single barred which would be shown by a spot on the head. I am not seeing a spot so I would say no to this being a Cream Legbar mix.
Many chickens have the chipmonk pattern. I started hatching barn yard mixes when I was 8 years old. We always got a percentage of chicks in every hatch that were chipmonk striped. When I was 12 years old I got a flock of black brested red Old English Game Bantams. All of those chicks came out chipmonk striped (male and female). Even though they are English they are worlds apart from a Cream Legbar.
Where did you get the eggs from? It may just be a recessive gene in the line of what ever flock it came from.
Edited by GaryDean26 - 2/26/16 at 8:00pm