Season chicken with salt and pepper then drizzle with oil and toss well.
Thread onto skewers and chargrill until chicken is golden.
Heat sesame oil in a medium sized wok or pan and gently sauté spring onion, garlic and chopped onion until soft.
Add soy sauce and Hoisin sauce and heat through very well.
Add water and simmer for 2 minutes or until sticky.
Remove chicken from the skewers and stir into the sauce.
Serve noodles in a bowl topped with the chicken and sauce.
Garnish with fresh coriander and toasted sesame seeds.