Kasperi Kapanen scored for the Penguins (10-6-4), who have won five in a row while outscoring opponents 16-2.
It was Jarry's first game against the Islanders since the best-of-7 Stanley Cup First Round last season, which New York won in six games. Jarry has three shutouts during the win streak; each has come on the road.
"It was just another game against a different team," Jarry said. "I think that's been my mindset this year, is I just want to put my best foot forward and make sure I'm doing my part to try and help the team.
"The guys are doing a great job in front of me, blocking shots, making sure we're getting pucks deep, and I think that's been the key over our last five games."
Ilya Sorokin made 29 saves for the Islanders (5-10-2), who have lost their first four home games and have been shut out twice. They have not held a lead since Nov. 15, when Mathew Barzal scored at 2:53 of the first period in a 4-1 loss at the Tampa Bay Lightning. It lasted 23 seconds.
New York has been outscored 32-7 in the streak and has six players in COVID-19 protocol: forwards Anders Lee, Kieffer Bellows and Ross Johnston, and defensemen Adam Pelech, Andy Greene and Zdeno Chara. Defenseman Ryan Pulock and center Brock Nelson are also out, each with a lower-body injury.
"This is one of the biggest challenges I've ever faced in 20-something years, and I started with an expansion team (Nashville Predators in 1998-99), and expansion teams are built a lot different than they are now," coach Barry Trotz said. "But this is one of the bigger challenges. We're in a real tough division. Obviously, we want to do well in this rink. Our fans want us [to do well], they're excited about that, and we get hit with COVID, we get hit with injuries, those type of things. Very untimely, but that's life."
Kapanen scored on a wrist shot from the left face-off circle off a pass from Sidney Crosby at 16:41 of the second period.
"It took a while [to score against Sorokin]," Kapanen said. "All game we put a lot of pucks on him and he was making some great saves. Lucky enough, we got one past him today."