It's going to take longer than expected to see calorie counts on chain restaurant menus.

FOX's Tonya J. Powers has more:

Remember the law passed six years ago that requires calorie labels on menus?

You know the one passed in 2010 as part of the health care overhaul that will eventually require restaurants and places that sell prepared food and have 20 or more locations to post the calorie content of food on their menus and displays? You know that one? 

It's still not in effect. Restaurants and other retailers originally had until the end of 2015 to comply. Then the FDA pushed the deadline back to the end of this year. 

This month, they pushed it back again. Some restaurants like Panera, Starbucks and McDonald's have already started putting calories on their menu boards.

Tonya J. Powers, FOX News.