Heat a griddle pan (or ordinary frying pan). Place the chicken breasts in the pan and cook for 8–10 minutes on each side.
Meanwhile, place the soy sauce, peanut butter, lemon juice, water and a little pepper in a small saucepan. Mix well and heat gently, adjusting the consistency of the sauce with a little more water if necessary, so that it is slightly runny but coats the back of a spoon.
When the chicken is cooked, serve with the peanut sauce drizzled over the top, garnished with coriander and chopped fried peanuts, if liked. Serve with mixed vegetable noodles.