Holy guacamole, it's National Avocado Day! To celebrate the holiday, some restaurant chains are offering special deals. Chipotle is adding FREE guacamole for entree orders placed on its app and website. Carl's Jr. is selling a $3 guacamole double cheeseburger. Rubio's Coastal Grill you can get free chips and guac with any order by using the coupon found here. QDOBA isn't offering free guac on National Avocado Day....They're offering free guac FOREVER! El Pollo Loco: Snag free chips and guacamole Wednesday when you order a regular-priced Family Dinner online. Just use code GUAC with checkout!