Place the brown rice noodles in a bowl of hot water and soak for 10 minutes until softened, then drain and set aside.
In a small jar, whisk together the tamari, lime juice, honey, and red chili flakes to create the pad thai sauce.
Heat the sesame oil in a large wok or non-stick skillet over medium-high heat.
Add the minced garlic and shrimp to the skillet, sautéing for 2-3 minutes until the shrimp are pink and opaque.
Push the shrimp to one side of the pan, crack the egg into the empty space, and scramble it quickly until just set.
Add the soaked rice noodles, zucchini noodles, and the prepared sauce to the pan, tossing everything together for 2 minutes until the zucchini is slightly tender and noodles are coated.
Fold in the bean sprouts and green onions, then remove from heat.
Serve immediately topped with crushed peanuts and an extra squeeze of lime.