4 oz. (1/2 of 8-oz. pkg.) PHILADELPHIA Cream Cheese
2 tsp. HEINZ Yellow Mustard
5 oz. KRAFT Cheddar Cheese, grated and divided
4 slices cooked OSCAR MAYER Bacon, finely chopped
1 CLAUSSEN Kosher Dill Pickle Wholes, chopped for garnish
2 bags (13 oz. each) tortilla chips, for serving