Place the brown rice noodles in a bowl of hot water and soak according to package instructions until al dente, then drain and set aside.
In a small bowl, whisk together the coconut aminos, lime juice, and red chili flakes to create the sauce.
Heat the avocado oil in a large skillet or wok over medium-high heat.
Add the minced garlic and sauté for 30 seconds until fragrant.
Add the shrimp to the skillet, seasoning with sea salt and black pepper, and cook for 2-3 minutes until pink and opaque.
Push the shrimp to one side of the pan and crack the egg into the empty space, scrambling it quickly until just set.
Add the cooked noodles and the prepared sauce to the skillet, tossing everything together to coat thoroughly.
Fold in the bean sprouts and cook for an additional 1 minute until they are slightly softened but still crisp.
Garnish with sliced scallions and serve immediately with an extra lime wedge if desired.