"I tried Wendy's twice, once ordering minus the bun and got very sick and once a salad. I'll pass as I am too sensative for this and it is not worth the risk of cross contamination for me.Note: In another comment Jay mentions that he won't eat at Taco Bell either because they have serious cross-contamination issues.
Some other restaurants that I've eaten at and not gotten sick is Chipotle Mexican Grill in Sandy. At the counter while ordering I explain my situation, they change their gloves at my request and wash their hands. They put my items on foil and make it separate from my family's or anyone else. I have never gotten sick there.
McGrath's Seafood in Sandy also has worked well for me. They have a gluten free menu and I have eaten there over 20 times. Once time they brought bread out and they redid the entire meal when I explained I could not eat it then.
Some say Five Guys Burger and Fries but I'll pass. I watch them put my paddies on a bun and then take them off. That's enough to make me sick so I asked if they would redo and got a hassle look. They did it but I don't trust them as their workers don't understand and just follow a process. They do cook their meat separate from their buns (two separate grills).
My other favorite restaurant is Z'Tehas Southwestern Grill. I haven't gotten sick there once and great food.
Some say Pei Wei is GF and they have a GF menu but their preparation worries me. They make it in a wok that is the same as they use for Gluten meals and for those who are sensative this just doesn't work. I tried them and got sick, that was enough for me.
Pei Wei, Five Guys and Chipotle are located in Sandy by the Pets Smart off of Hwy 89/State Street across from the mall. Of them I only go to Chipotle as stated above."
I can eat at both Wendy's and Pei Wei, but probably because I'm not very sensitive to cross-contamination. You need to be your own judge of what your body can and can't handle.