Stack 2 sheets of rice paper together, dip in water, shake off excess water, and lay sheets down on cutting board on a flat surface making sure to keep sheets aligned. Do not let the rice paper soak in the water, just dip.
Lightly brush the top sheet with a layer of avocado or other neutral oil.
Using a very sharp knife or a pizza wheel, cut sheets into ½-inch wide strips. It's ok if the sheets are still firm; they will soften as they soak up water from the surface.
Place strips into a bowl of cold water to keep them from sticking to one another.
Make Dressing
Combine all ingredients for dressing by whisking in small bowl or shaking together in a small mason jar with lid. Add water to thin out to a pourable consistency. Taste with a piece of lettuce or cabbage and adjust seasoning to taste if needed.
Assemble Summer Roll Salad
Place shredded lettuce and cabbage, bell peppers, carrots, cucumbers, and half the cilantro, mint, and sliced green onions in a large mixing bowl.
Drain the noodles and add to the salad mixing bowl. Drizzle with half the dressing and toss everything until evenly distributed and coated with dressing.
Add chicken and drizzle with 2-4 more tablespoons of dressing directly onto chicken, Garnish with remaining half of the cilantro, mint, green onions, and peanuts.
Store leftover dressed salad in a tightly covered container in the refrigerator for up to two days. Leftover dressed salad will take on a softer, marinated texture. Store leftover undressed prepped (i.e. washed, dried, and chopped) salad greens in the refrigerator for three days. Leftover Roasted Peanut Vinaigrette will keep for three days in a tightly sealed container in the refrigerator.