After Albion held the Foxes to a 2-2 draw at King Power Stadium on Tuesday night, Pulis revealed his hope that Claudio Ranieri's men kick on and clinch the title against all odds.
"I hope Leicester win the league," said Pulis.
"This will be the most surprising Premier League or shock that has happened since Nottingham Forest (who won the First Division in 1978) and it's a bigger shock because of the divide between the clubs who have and those who haven't is enormous.
"I am now supporting Leicester for the rest of the season, apart from West Brom.
"Every Leicester fan has to be proud of their team. They are fantastic and never stop."
Albion took the lead through Salomon Rondon in the 11th minute before Leicester fought back to lead 2-1 at half-time through Danny Drinkwater and Andy King, however, Craig Gardner produced a lovely free-kick five minutes into the second half to force a drawn result in the East Midlands.