Review of Taziki's Mediterranean Cafe

I have celiac, I called order in so I could ask questions about their gluten free options. They seemed knowledgeable. I ordered a grilled chicken feast with the salad and potatoes and a grilled chicken kabobs feast with the salad and rice. All of which they said was GF. When we picked the order up the kabobs feast had a pita chip laid across the salad. I quickly checked the grilled chicken and there was not a pita chip BUT the salad did look different with no feta cheese. Once we inspected more closely there was part of a pita chip hidden under the salad. Almost as if they had put it on originally and then tried to cover it up by taking a pita chip out and some of the salad. Not knowledge on cross contamination.