Place brown rice noodles in a bowl of very hot water and soak for 10-15 minutes until softened but still firm, then drain.
In a small jar, whisk together the tamari, fish sauce, lime juice, honey, and red pepper flakes until the honey is fully dissolved.
Heat the avocado oil in a large wok or skillet over medium-high heat and add the minced garlic, sautéing for 30 seconds until fragrant.
Add the shrimp to the pan 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 pan, scramble it quickly until set, and then mix it in with the shrimp.
Add the drained noodles and the sauce to the pan, tossing constantly for 1-2 minutes until the noodles are coated and the sauce thickens slightly.
Stir in the bean sprouts and sliced green onions, cooking for just 30 seconds to keep the sprouts crisp.
Remove from heat and serve immediately, topped with the crushed peanuts for a salty crunch.