The midfielder arrived at the club on a free transfer from Valencia this summer.
The midfielder is one of eight new signings at the Olympic Stadium this summer, arriving on a free transfer from La Liga side Valencia.
He has already made an impact too, scoring in the Europa League victory over NK Domzale earlier this month.
West Ham's Sofiane Feghouli in action
He faces a fight to get into a Hammers midfield full of attacking talent such as Manuel Lanzini and Dimitri Payet, who both starred in a strong season last year.
Parlour has backed him to shine though, saying he believes the Algerian is going to be exciting.
“I think he’s going to be exciting,” he told talkSPORT.
“He’s at a great age at 26-years-old and I think he’ll have a great season at West Ham. He’s shown a little bit of class so far.”
West Ham's Sofiane Feghouli in action with NK Domzale's Jure Balkovec
It now remains to be seen if Feghouli does prove to be a good signing for West Ham this season.
Much will rest on the speed at which he adapts to the Premier League, with England’s top flight often hard for players to acclimatise to, especially those from La Liga.
A big bonus for him is the fact he is arriving without the burden of a big transfer fee, which may prove a blessing in disguise in the long run.
West Ham's Sofiane Feghouli celebrates scoring their third goal