The 24-year-old, who only met his new team-mates on Thursday after joining the Pirates on a three-month loan deal from Charlton, scored a brace as Trollope's side cruised to a 3-1 win.
It was Rovers third victory on the trot and their sixth in eight League One outings.
"Chris was fantastic on his debut for us," Trollope told the Bristol Evening Post. "We know if we can get the ball down the side of centre-halves then he has the pace and power to cause problems - and he can finish.
"His goalscoring record has been decent - especially when he went to Gillingham a couple of years ago - and we are pleased he has got off to a flying start.
"We hope he can get even better. He knows Jo Kuffour already but if we can get them working a bit closer together, then hopefully then can forge a partnership for us."