Place the rice noodles in a bowl of very hot water and soak for 20-30 minutes until flexible but still firm.
In a small bowl, whisk together the tamari, lime juice, maple syrup, and red pepper flakes to create the sauce.
Heat the sesame oil in a large skillet or wok over medium-high heat, then add the minced garlic and ginger.
Add the thinly sliced chicken breast to the pan and cook until golden brown and cooked through.
Push the chicken to one side, crack the egg into the empty space, and scramble it until just set.
Drain the noodles and add them to the skillet along with the prepared sauce, tossing everything together for 2 minutes.
Fold in the bean sprouts and green onions, cooking for one more minute until the sprouts are slightly wilted.
Serve immediately topped with the crushed roasted peanuts for a satisfying crunch.