Heat a wok over high heat until hot. Add 1 teaspoon of oil and half the chicken. Stir-fry for 1 minute, or until golden. Remove to a plate. Repeat with oil and remaining chicken. Cover and keep warm.
Add remaining oil, ginger, garlic, broccoli, onions and capsicum to hot wok. Stir-fry for 3 minutes, or until broccoli and capsicum are tender. Add noodles and stir-fry for 1 minute.
Combine fish sauce, lime juice, chillies and soy sauce in a jug. Add to wok with chicken. Stir-fry for 1 to 2 minutes, or until heated through and well combined. Divide stir-fry between serving bowls. Top with coriander. Serve.