They have lots of clearly marked gf options. I had both the Tillamook Strawberry and Dutch Chocolate gelato, because I couldn't decide between the two! The employee we spoke with is lactose intolerant, so she "gets it" and said she'd take care of me. They offer gf cones too.
The gelato was amazing—they have gluten free and vegan options! But about 1/2 way through the gluten free cone, I realized that I was having a reaction. I think it’s just the cones. They use separate scoops for each flavor of gelato.