Peanut Sesame Noodles with Sriracha

dry spaghetti (I use multi-grain)

cucumber; peeled, seeded, and cut into matchsticks

finely shredded carrot

minced fresh garlic

freshly chopped scallion

shredded chicken from leftover rotisserie chicken (alternatively, boil 2-3 chicken breasts or thighs in salted water until cooked through; shred the cooked chicken.)

For the Sauce:

smooth (not chunky) peanut butter

regular soy sauce

TB Asian rice vinegar

TB Asian sesame oil, divided

TB packed brown sugar

ground ginger

Sriracha, depending on how spicy you want it

Toasted sesame seeds for garnish

Chopped roasted peanuts for garnish