Peel the skin off the cucumber and then peel about 16 long strips of the cucumber.
Dip 2 pieces of rice paper into the boiling water and then lie flat next to each other on a cloth napkin. In a row, place 3 halves of shrimp (pink side face down) in the middle of each rice paper. Then take some rice noodles and place on top of the shrimp. Place 2-3 strips of chicken on top of noodles and then place some more rice noodles on top of the chicken. The peeled cucumber and Romaine lettuce strips top of the second layer of rice noodles. Pull mint and cilantro leaves off the stem and place face down on the rice paper in front of the shrimp and noodles.
Fold the side of the rice paper in and then tightly roll the rice paper. The product should be 2 springrolls, which can be cut into 6 small pieces and plated or kept as 2 longer pieces. A peanut sauce is served on the side with the springrolls.