Maybe life at McDonald’s would be less depressing if it had invented chicken fries. New menu items launched by McDonald’s (MCD) have so far failed to stop its sales from shrinking. But they are really doing the trick at Burger King, which released new numbers on Monday that show the fast food chain is growing at an impressive pace. The Burger King growth story has been fueled largely by new menu items like the extra-long pulled pork sandwich as well as chicken fries — breaded chicken strips that are shaped like fries and can be dunked in dipping sauce like BBQ and buffalo. More