Chiarot's wrist shot from the top of the left circle deflected off the stick of Capitals defenseman John Carlson to make it 2-1 at 12:51.
"It's nice," Chiarot said. "We've been talking about getting on a bit of a roll here. We're excited, the Stanley Cup champs coming to town you want to bring your best effort. And Jets goalie Connor Hellebuyck] did a good job of keeping us in it at the beginning, and I thought once we got going, got skating, it was a pretty tight game."
[WATCH: [All Capitals vs. Jets highlights]
Kyle Connor scored into an empty net at 19:00 to make it 3-1.
Jets forward Blake Wheeler extended his point streak to 11 games (two goals, 18 assists). He also had an 11-game point streak from March 20-April 9, 2016. Wheeler is second in the NHL in assists with 21, one behind Mikko Rantanen of the Colorado Avalanche.