Marinade: Add the lemon grass, fish sauce, sugar, garlic, lemon zest and ginger to a food processor and pulse until blended. Add the chicken to a medium bowl and rub it with the marinade. Cover and refrigerate overnight.
Preheat a grill to medium heat.
Grill the chicken until cooked through, about 4 minutes per side. Then slice.
Julienne the cucumber and carrot and pick or tear the shiso, mint and basil and add them to a small bowl along with the cilantro leaves.
Bring a large pot of water to a boil over medium heat. Add the vermicelli noodles and cook for 3 to 5 minutes. Drain and put them into ice bath to cool.
Add all of the sauce ingredients to a blender and blend until smooth. Pour it into a small bowl and set aside.
Soak 1 rice wrapper in a bowl of water, pull out when pliable, and put it on a flat surface. Add some cooled vermicelli noodles, some cucumber mixture and some chicken. Roll up and repeat with remaining ingredients. Arrange the rolls on a serving platter and serve with spicy peanut sauce.
A viewer or guest of the show, who may not be a professional cook, provided this recipe. It has not been tested for home use.