If you wanted to be adventuresome and assuming you have time before the contest, you could try making your own. Recipes abound on the internet, here are two:
https://www.homesicktexan.com/2009/01/making-my-own-mexican-chorizo.htmlI see lots of recipes include either cinnnamon, cloves, or allspice. I like those spices, just not in my chorizo even in small amounts they are very distinguishable to my taste buds, so I leave them out. You will see some recipes that call for Allepo peppers, if you chose those recipes you can order them from Penzey's Spices.
https://www.allrecipes.com/recipe/214089/mexican-chorizo/Also, I've eaten at a few places over the years that added diced fajitas and a bit of cheese, if done right they were pretty good. If it was me, and I was adding diced fajitas, I'd make sure they had been grilled over wood to impart that smoky flavor, that as opposed to some that have been cooked on a griddle or pan, as I would say "a la plancha"...you don't want that, totally different flavor profile IMHO.
Good luck in the contest!!!