01 - Soak rice noodles in warm water for 20–30 minutes until pliable but not fully soft. Drain and set aside.
02 - In a small bowl, whisk together fish sauce, tamarind paste, sugar, and soy sauce until sugar dissolves completely.
03 - Heat 1½ tbsp oil in a large wok or skillet over medium-high heat. Add sliced chicken and stir-fry until just cooked through, about 3–4 minutes. Remove and set aside.
04 - Add remaining oil to the wok. Add garlic and shallot, sauté for 30 seconds until fragrant but not browned.
05 - Push aromatics to the side, crack in eggs, and scramble until just set, about 1 minute.
06 - Add drained noodles and prepared sauce to the wok. Toss constantly to coat noodles evenly and cook until tender, about 2 minutes.
07 - Return chicken to the wok. Add bean sprouts, spring onion whites, and carrot. Stir-fry for 2–3 minutes until noodles are tender and everything is heated through.
08 - Remove from heat immediately. Top with peanuts, spring onion greens, cilantro, lime wedges, and chili flakes as desired. Serve while hot.