Enlarge KFC The KFC Double Down has meat and cheese, no bread. KFC is putting its chicken where its buns were. Today, the nation's largest chicken fast-food chain announced plans to nationally roll out a breadless chicken sandwich that uses two boneless chicken fillets as the bun — then squeezes two pieces of bacon, two slices of cheese and some sauce in between. READ: KFC press release Drooling yet? You'll have to wait a few days. The $5 sandwich, dubbed the Double Down, will be available at all KFCs on April 12. The sandwich, which comes complete with 1,380 milligrams of salt (about 60% of what the federal government recommends for an entire day's consumption) and 10 grams of saturated fat (about 50% of a day's supply), would seem to be a slap in the face to nutritionists — and nutrition advocates such as Michelle Obama— calling for more restraint from the nation's foodmakers. "It's a salt bomb," says Kelly Brownell, director at Yale's Rudd Center for Food Policy and Obesity. "That's a better part of a day's sodium in one meal." The sandwich is not, however, a calorie bomb. The Original Recipe version is 540 calories — about the same as a Big Mac. "You can do worse than 540 calories," Brownell concedes. For KFC, it's all about driving buzz and traffic among its heaviest users — guys ages 18 to 24, says Javier Benito, executive vice president of marketing and food innovation at KFC. In consumer studies, he says, young men said they were still hungry after eating chicken sandwiches served on conventional buns. "They told us they were looking for something meatier," he says. The sandwich was tested last year in Providence and Omaha. "We had people driving across state lines to try the product," Benito says. Despite the high salt content of this product, Benito says KFC is committed to lowering salt in its product line overall and is testing a lower-sodium version of its Original Recipe chicken. The Double Down is a limited time offer that will be available for only six weeks. What to do with all the buns that won't be used in its Double Down chicken sandwiches? KFC plans to donate them to food banks. It will be donating "thousands" of buns to food banks nationally in the next six weeks, he says. But holding the chicken. Guidelines: You share in the USA TODAY community, so please keep your comments smart and civil. Don't attack other readers personally, and keep your language decent. Use the "Report Abuse" button to make a difference. You share in the USA TODAY community, so please keep your comments smart and civil. Don't attack other readers personally, and keep your language decent. Use the "Report Abuse" button to make a difference. Read more