Soak rice noodles in room-temperature water for 30 to 45 minutes until pliable but firm. Drain and set aside.
Whisk together tamarind paste, fish sauce, palm sugar, and dried shrimp until sugar dissolves. Taste and adjust the balance.
Prep all ingredients: mince garlic, slice protein into bite-sized pieces, trim chives into 2-inch segments, chill sprouts, and crush peanuts.
Heat a wok over high heat until smoking. Add oil, sear protein, push to one side, scramble eggs, then mix together.
Add drained noodles and sauce. Toss vigorously for 1 to 2 minutes until glossy and coated. Stir in bean sprouts and garlic chives; remove from heat.
Plate immediately with crushed peanuts, lime juice, and chili flakes. Serve with extra lime wedges and chili on the side.