Place brown rice noodles in a bowl of very hot water and soak for 10 minutes until softened but still firm, then drain.
In a small bowl, whisk together the coconut aminos, 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 add the minced garlic, sautéing until fragrant.
Add the sliced chicken breast to the skillet, seasoning with sea salt and black pepper, and cook until golden and cooked through.
Push the chicken to one side of the pan, crack the egg into the empty space, and scramble until just set.
Toss in the soaked noodles and the prepared sauce, stir-frying for 2 minutes until the noodles are well-coated and tender.
Fold in the bean sprouts and green onions, then serve immediately topped with the chopped peanuts for a satisfying crunch.