The long-serving Northern Irishman, who was Albion's best performer despite coming off the bench in the second half, stormed into the dressing room after staying out on the pitch to clap the home fans.
He then proceeded to demand better from some of his underperforming team-mates before rounding on Pardew and questioning his tactics.
It's believed Brunt disagreed with his head coach's decision to stick with his favoured 4-4-2 system against Huddersfield's five-man midfield.
Brunt was left out of the starting line-up following James McClean's man of the match performance against Southampton a week previously, but he set up Craig Dawson's goal seven minutes after coming on.
He has now set up four of Albion's last six goals in the league, and Pardew's decision to leave him out of the team did not go down well with fans.
Supporters cheered when Brunt was brought on in the second half, and the 33-year-old was one of few in blue and white who came away from this dreadful game with his reputation intact.
At times in the second half he was visibly annoyed when in possession, throwing his hands up and demanding someone in front of him make a run.
His exclusion wasn't the only selection decision that drew criticism from the fans.
Supporters also booed Gareth Barry off the pitch and sarcastically cheered when he was substituted following a pedestrian performance from the newly-turned 37-year-old.
There was also a smattering of boos for winger Matt Phillips when he was replaced by Oliver Burke.
When Pardew was asked about the reaction to his team selection, he said: "I think that's just frustration and I don't think we should make this an individual thing.
"This is team thing and regardless of my selection, the team didn't win against Huddersfield at home, so I don't think they're going to be best pleased about any sort of decision.
"We have to accept that and move on, and that's what we'll do. We just have to go to the next week and hopefully get ourselves a win.”