Many French eateries include this word in their names; it means "at the home of"
[DOC] [TLE] Chez Bob - Albuquerque, New Mexico (CLOSED) - Gil's Thrilling ... [PAR] Jan 23, 2013 ... Chez Bob, one of Albuquerque's very best French restaurants ... Much as poetic 
French words are apt to do, the term chez seems to impart instant ... that 
appellationeven though chez is just a preposition which means at the home of
.