Plymouth, who had lost only one of their previous eight games, became the latest side to feel the full force of the jet-heeled Senegal international.
All they had to show for their efforts was what turned out to be a consolation strike from substitute Rory Fallon, who opened his account for the club following his £300,000 move from Swansea two weeks ago.
But they will be thinking what might have been as they were a transformed side once Fallon and on-loan Chelsea winger Scott Sinclair were sent on from the bench and caused panic in the Albion defence in the closing stages.
Kamara struck twice in the space of ten minutes either side of half-time, opening his account with a 40th minute penalty, to take his goal tally to 17 in 21 starts - with five of them coming in the last three games.
He collected the decisive second in the 50th minute when he raced on to a raking crossfield ball from Kevin Phillips and cut past both Tony Capaldi and Hasney Aljofree before poking his low shot beyond goalkeeper Luke McCormick.
Following their derby day heroics last weekend against Wolves, Albion looked off key in the opening stages with Kamara wasting two early chances.
Fortunately for them, Plymouth initially struggled to test Albion's debutant goalkeeper Dean Kiely.
The only time Kiely was really forced into action in the opening period was when he dealt with a free-kick from Peter Halmosi.
With Albion struggling to make a breakthrough on their own, it was eventually handed to them, quite literally, by Akos Buzsaky.
There appeared little danger when Paul McShane headed on a throw-in by Neil Clement. But referee Mike Thorpe ruled that Buzsaky had handled McShane's header and the Norfolk official had no hesitation in pointing to the spot.
Kamara calmly slotted home the penalty despite the best efforts of McCormick to essentially seal Albion's success.
Once Kamara struck again, Albion did noticeably ease back and it almost proved to be their undoing.
They had to withstand a nervous final 19 minutes after Fallon had set the alarm bells ringing when Sinclair and Aljofree combined to set up the big frontman, who volleyed home from ten yards.
It then needed an 88th minute clearance off the line from Clement following Sylvan Ebanks-Blake's lob to secure Albion's victory.