Place the brown rice noodles in a large bowl and cover with very hot water; soak for 8-10 minutes until tender but firm, then drain and set aside.
In a small jar, whisk together the tamari, lime juice, honey, and red pepper flakes until the honey is fully dissolved.
Pat the shrimp dry with paper towels and season with sea salt and black pepper.
Heat the toasted sesame oil in a large non-stick skillet or wok over medium-high heat.
Add the shrimp to the skillet and cook for 2 minutes per side until pink and opaque, then remove the shrimp and set aside.
In the same skillet, add the minced garlic and white parts of the scallions, sautéing for 30 seconds until fragrant.
Add the drained noodles, bean sprouts, and the prepared sauce to the skillet, tossing constantly for 1-2 minutes until the noodles are well-coated and the sprouts are slightly softened.
Return the shrimp to the pan and toss once more to combine and heat through.
Divide the mixture into a bowl and garnish with crushed roasted peanuts, fresh cilantro, and the green parts of the scallions.