Soak the dry rice noodles in a bowl of hot water for about 10 minutes until they are tender but still firm, then drain and set aside.
In a small mixing bowl, whisk together the tamari, tamarind paste, and honey to create the Pad Thai sauce base.
Heat the avocado oil in a large skillet or wok over medium-high heat.
Add the sliced chicken breast to the skillet and sauté until golden brown and cooked through, approximately 5-6 minutes.
Push the chicken to one side of the pan and crack the egg into the empty space, scrambling it until fully set before mixing it with the chicken.
Stir in the minced garlic and red pepper flakes, cooking for 30 seconds until the aromatics are fragrant.
Add the soaked rice noodles, bean sprouts, and the prepared sauce to the pan.
Toss everything together vigorously for 2 minutes until the noodles are well-coated and the sprouts have slightly wilted.
Transfer to a plate and garnish with crushed peanuts, sliced green onions, and a fresh squeeze of lime juice.