Place the brown rice noodles in a bowl of very hot water to soak for 8-10 minutes until tender but firm, then drain and set aside.
In a small bowl, whisk together the tamari, lime juice, honey, and red pepper flakes to create the pad thai sauce.
Heat the avocado oil in a large skillet or wok over medium-high heat and sauté the minced garlic for 30 seconds until fragrant.
Add the shrimp to the skillet and cook for 2 minutes per side until pink and opaque, then push them to one side of the pan.
Crack the egg into the empty side of the skillet, scrambling it quickly with a spatula until just set.
Toss in the drained noodles, bean sprouts, and the prepared sauce, stir-frying everything together for 1-2 minutes until well coated and heated through.
Remove from heat and garnish with sliced green onions and crushed peanuts before serving immediately.