01 - Cook the rice vermicelli noodles according to package instructions. Drain, rinse under cold water, and set aside.
02 - Prepare all vegetables and herbs. Arrange the chicken, noodles, and vegetables within easy reach for assembly.
03 - Fill a large shallow dish with warm water. Dip one rice paper wrapper into the water for 5-10 seconds, just until pliable. Place on a clean, damp kitchen towel or cutting board.
04 - On the bottom third of the wrapper, layer a lettuce leaf, a small handful of noodles, sliced chicken, carrot, cucumber, bell pepper, and a few leaves each of mint, cilantro, and basil.
05 - Fold the sides of the wrapper inward, then roll up tightly from the bottom into a neat cylinder. Repeat with remaining ingredients.
06 - In a small bowl, whisk together hoisin sauce, peanut butter, soy sauce, rice vinegar, sugar, and water until smooth. Adjust consistency as desired. Stir in sriracha if using. Sprinkle with crushed peanuts.
07 - Serve rolls whole or sliced in half, with dipping sauce on the side.