The Moroccan's goalscoring appearance as a substitute in the defeat to West Ham United on Monday has earned him his first start since the opening day of the season.
Hughes also makes a double change in defence, welcoming back Jose Bosingwa and Anton Ferdinand from injury in place of Nedum Onuoha and Stephane Mbia, who moves into midfield at the expense of Alejandro Faurlin.
Peter Odemwingie returns from suspension for the hosts after missing their last three matches, but Chris Brunt and Billy Jones are unavailable after picking up injuries in the 1-1 draw with Aston Villa last weekend.
West Brom: Foster; Tamas, McAuley, Olsson, Popov; Yacob, Mulumbu; Gera, Morrison, Odemwingie; Long
QPR: Cesar; Bosingwa, Ferdinand, Nelsen, Hill; Granero, Mbia, Wright-Phillips, Taarabt, Park; Zamora