Crush the vanilla wafers using a food processor or sealable plastic bag and rolling pen.
Pour into a large bowl. Add the butter, lemonade concentrate, 2/3 of the powdered sugar, lemon zest and the pecans. Mix thoroughly using your hands. Reserve the remaining powdered sugar to roll the lemon bites in.
Roll into balls about 1 inch in diameter and roll in remaining powdered sugar and lay them out on waxed paper. Let them sit out for @ 1 hour and then roll them again in powdered sugar.