Maybe a Rhode-bar. A common cross (Rhode Island red x Crested Cream Legbar) that hatcheries sell. Should lay Olive eggs. 
The color looks so off for a purebred legbar.

The color looks so off for a purebred legbar.
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It really does. Maybe she's a Welbar.The color looks so off for a purebred legbar.
That’s another possibility. Maybe she was supposed to be an Olive Egger and took heavily after a legbar. I don’t knowIt really does. Maybe she's a Welbar.