Want a quick bite before going out on Halloween? Â Head to your local Taco Bell between 6 p.m. and midnight on October 31 to receive a free Black Jack Taco. Â What’s a Black Jack Taco you ask? Â Seasoned ground beef, zesty pepper jack sauce, letter and cheese. To find a location near you, click here. Â Thanks to Dory for passing along this deal!