Cook noodles according to packet instructions and set aside to drain.
In a wok or large high pan on high heat, stir fry chicken in a little peanut oil until brown. Set aside.
Add a little extra peanut oil. Stir fry the onion before adding in garlic, carrot, capsicum. Stir fry lightly then add in snow peas and toss for a minute.
Add noodles into the wok with sauces and mix. Ensure noodles are well covered with sauce. Add lemon, chilli or brown sugar if using.
Add chicken back into the wok with vegetables and noodles and stir fry until cooked through and tender. The noodles will soak up most of the sauce. At this point you can add extra sauce if you feel you need it. Add herbs.
Garnish with extra herbs, chilli or crushed nuts if you like.