ladybrasa
Songster
Barnevelders are double laced, this bird is not. Also getting a Blue Barnevelder from a feed store/hatchery would be extremely rare.
I thought barnies could be just laced or doubled laced. Is that not true? Also OP said their feed store got birds from a small local hatchery, not a big one, due to shipping restrictions in California. I also think a single comb Wyandotte is more plausible, but don’t think a Barnevelder can be entirely ruled out? Or mix of course!