Place the brown rice noodles in a bowl of hot water and soak for 10 minutes until softened but still firm, then drain.
In a small bowl, whisk together the tamari, lime juice, and chili garlic sauce to create the zesty pad thai base.
Heat the sesame oil in a large skillet over medium-high heat and add the shrimp, seasoning with sea salt and black pepper.
Sear the shrimp for 2 minutes per side until pink and opaque, then remove from the pan and set aside.
In the same skillet, crack the egg and scramble quickly until just set, then add the shredded carrots and bean sprouts.
Add the soaked noodles and the prepared sauce to the skillet, tossing everything together for 2 minutes until the noodles are tender.
Return the shrimp to the pan and fold in the sliced green onions until well combined and heated through.
Serve immediately topped with the crushed peanuts for a salty, textural crunch.