Slice the zucchini lengthwise, on a mandolin or by hand, into 1/8 inch thick slices. Stack those slices and cut them lenghtwise into long noodley strips. (Or see note above about ribbon noodles.)
Toss the noodles with the dressing, reserving some of the dressing for drizzling. Taste for salt.
Top servings with tomatoes, cucumber, red onion, and peanuts. Drizzle with extra dressing as desired. Finish with fresh herbs and serve!