Boil the spaghetti according to the description on the package.
Cut the chicken in preferred sizes.
Fry the chicken in a frying pan together with the bouillon.
When the chicken bites are almost done add the olives, sour cream, oregano and the tarragon and stir together.
Pour away the water from the casserole with the pasta.
Serve the pasta and the chicken sauce warm on a plate.