This new fast-casual chain is looking to expand nationally.Every restaurant investor is looking for the next Chipotle Mexican Grill (NYSE: CMG). The fast-casual restaurant chain has posted phenomenal returns for investors after taking its healthy Mexican fare across the U.S. The company currently has a market capitalization of $86 billion, making it one of the largest restaurant brands in the world.The success of Chipotle has spawned a lot of fast-casual restaurant copycats. One of the most successful is Ca ...