The goal triggered Broadbridge back to life as they looked to restore their two-goal lead before half-time.
Worthing were pinned back into their own area, and it looked like Broadbridge would score when Mutongerwa was played through one on one, but Worthing goalkeeper Faith Kaldam managed to block the shot.
Just as it looked like Worthing had held off the pressure, Broadbridge broke in behind their defence with Campbell’s sprinting on to a through ball and powering his strike past Kaldam.
The second-half though brought with it a change in fortunes for both teams, with Worthing the team that came out and imposed themselves physically on the game, pressing high up the pitch.
Chadwick epitomised their efforts in the second-half, putting in a combative and creative shift from the base of midfield.
They got their breakthrough when Frankland conceded another penalty, clipping Rocco Gamblin’s heels as he dribbled down the left-hand side of the area.
Second-half substitute Luque sent the keeper the wrong way after a stuttered run up.
Broadbridge’s Greensall was kept busy for the rest of the half as Worthing chased the equaliser.
In the end the decisive goal came in spectacular fashion, as, in 87th minute Chadwick received the ball midway through his own half, spotted the keeper off his line, and then launched a perfectly weighted shot that saw Greensall racing back towards his own goal. His efforts were in vain though, as he was unable to stop the shot landing in the back of the net.
Fans from both teams stood up to applaud as the young midfielder was mobbed by his teammates.
There was still time for further heroics from Chadwick, with the game going to penalties.
Marioa Quiasacca missed for Broadbridge leaving the Worthing captain to score the winning penalty and complete the comeback.
Worthing manager, Adam Hinshelwood, was delighted with his team’s performance in the second-half as they lifted the Sussex Community Shield for the first time since 1999.
He said: “I thought we were very placid in the first-half. I had to tell them, I know they are young, but you have to be honest with them and tell them we simply were not good enough at the start.
“We upped our intensity and our pressing and got ourselves back into the game because of that. I can’t be any more pleased for the players and their determination, the hard work that they showed in the second-half, it was brilliant and full credit goes to them.”