Soak rice noodles in hot water for 8-10 minutes until tender but firm, then drain.
Whisk tamari, lime juice, maple syrup, and red pepper flakes in a small bowl to create the sauce.
Heat sesame oil in a large skillet over medium-high heat and sauté minced garlic for 30 seconds.
Add shrimp, sea salt, and black pepper to the skillet, cooking for 2-3 minutes until pink and opaque.
Push the shrimp to the side of the pan, crack the egg into the empty space, and scramble until just set.
Toss in the soaked noodles, bean sprouts, and prepared sauce, stirring constantly for 1-2 minutes to coat everything evenly.
Remove from heat and garnish with sliced scallions and crushed peanuts before serving warm.