candidate: Ads included Del Taco 's promotion of their improved regular taco in September 2008 , the Classic Combo Deal in November 2008 , three separate meal deals for under three dollars ( including the aforementioned deal ) in January 2009 , the crispy shrimp taco in February 2009 , the chicken soft taco in April 2009 , and the chicken fajita burrito in June 2009 .