It's very possible. They have a lot of gluten free options throughout the store, so chances are they do. Call the bakery and one of their staff members can answer it. They're very prompt with answering any question from a customer.
I'm not a WinCo employee, but I'm a customer. I believe I've seen them in the refrigerator section of the bakery. Or just call WinCo bakery, they should be able to tell you.
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