The Capitals may be off to one of their worst starts in years, but they still remember how to beat the Panthers at home. Washington, last in the NHL after winning just two of its first 11 games, continued its domination of the Panthers at Verizon Center with a 5-0 victory Saturday night. The Capitals snapped a three-game losing streak by running out to a three-goal lead by the second period and not looking back. The biggest cheer of the night came when Mathieu Perreault scored with 10:32 left. That fifth goal gave fans in attendance free chicken wings at a local sports bar. The chant of “we want wings!’’ started soon after Alex Ovechkin made it 4-0. The way the Panthers played Saturday, there was little doubt the Capitals would deliver. Florida, ending a four-game road trip, simply couldn’t match the intensity of a very desperate Capitals team. “We have to play better than that, no doubt,’’ defenseman Brian Campbell said.