This month’s stock candidate is Jamba (JMBA), owner and operator of the Jamba Juice chain of 770 healthful smoothie outlets in the U.S., the Bahamas, Canada, Korea and the Philippines. The company has turned itself around since hiring a new CEO in late 2008, expanding its menu offerings, refocusing on customer health and increasing its community involvement, including expansion into K-12 schools and colleges. Today, Jamba is decades ahead of other fast food restaurants when it comes to healthy food, with same-store sales growth of almost 13% in April.