JP Morgan, Citigroup Earnings, CSX Reports, Jim Cramer's Snack Pick

Tuesday morning will be a mega-morning for bank earnings; Wells Fargo, Citigroup and Piper Jaffray are each set to release numbers before the bell. We'll also have JP Morgan earnings, with CEO Jamie Dimon having successfully returned from a cancer treatment, he's announced he's bullish for the long-term. Plus, we'll see CSX railways report earnings -- after the company reportedly rebuffed a potential buyer, investors may want to see solid numbers for a stock that has otherwise underperformed this year. Plus, Jim Cramer has a new fast food pick, one he says is set to get a big boost.