Pat banana leaves dry with paper towels. Place 1/2 cup tamale dough on smooth side of each banana leaf. Flatten slightly; make small indentation with back of spoon or fingers. Place about 2 tablespoons chicken mixture on dough. Using fingers, fold dough around filling, covering completely. Size of tamale should be 4x3 inches and 1 inch high. If there are any splits in the banana leaf, use a banana leaf scrap to double up that area. Fold bottom part of banana leaf over filling. Fold top part of leaves over filling; press leaf to keep in place. Fold both sides toward center, forming a square. Using banana leaf strings, tie each square around middle to look like package.