1. Boil chicken and cut into small pieces.
2. Boil potatoes and carrots.
3. Heat oil and fry spring onions for a while, then add chicken, carrots, capsicum, potatoes, black pepper powder, salt and cook till 2 to 3 minutes and remove from heat.
4. Add young's mayonnaise and tomato ketchup and mix well.
5. Add spaghetti and serve.