Gluten Free food available Estadi Olimpic

Hello! I have purchased a ticket to the Barcelona - Atletico Madrid match on 25th Feb. I was curious whether or not I would be able to find gluten free food(and what kind) at the stadium as I am diagnosed with celiac disease. Also, I am very excited because this is my first time seeing Barca in a live match so any tips regarding the stadium or arrival would be really appreciated

Thanks