Once the capsicum and chicken is cooked at the spaghetti and stir for 5 minutes. Let it simmer for another 10 minutes. Finally serve with grated cheese and a dash of pepper on the top. Those who like it rich in calories can also add fresh cream instead of milk for the white sauce. I personally like adding wine to pastas and this was the first time I tried vodka. Red or white wine can be a better substitute.