I don't remember the name sorry, I know where it is Migros City in Zurich Center. It is the same section as the EierSpatzli etc - by the meat section and across from the butcher They have a few different flavors, but can't remember exactly (no chicken though) .
It is definitey in other Migros as well and would expect in a similar section.
Looks like this, from Anna's
http://www.migros.ch/DE/Regionen/Ost...der_woche.aspx