Leicester pressed forward in a bid to find an equaliser, but West Brom held on for all three points to climb to 10th in the table, while Nigel Pearson's side are now only one place above the relegation zone.
Here, Sports Mole takes an in-depth look at whether the Baggies were worthy of their win.
On target: 5
On target: 3
Was the result fair?
Despite the Baggies being more incisive in the first half, the overall balance of play belonged to Leicester. An own goal which is sure to grace Youtube for years to come gifted Alan Irvine's charges the lead on a platter, after which the Foxes effectively had the visitors under siege. Though West Brom did well to hang on, they were lucky to leave the King Power with all three points.
Based on the balance of play, the Foxes had more than enough to even win the game, but toothlessness in the final third combined with a moment of madness at the back cost them dear. In the first half, they came out best in terms of possession, although their efforts were not the most incisive, and if you take into account the pressing that they carried out following their farcical own goal, they had more than enough chances to put the game away. It has to be said that several Leicester crosses proved too heavy to find the target men in front of goal, while Chris Wood's indiscipline in raising his foot too high when bearing down on the Baggies goalmouth right at the end of the second half pretty much summed up their day.
West Brom's performance
The Baggies edged out Leicester in the first half in terms of incisiveness in front of goal, with Saido Berahino's effort in the 17th minute forcing a good save from Schmeichel. They had a nervy moment minutes later when Joleon Lescott brought down Jamie Vardy in the box. Another good chance came when Craig Gardner drew a goalline clearance from Cambiasso from a header, again in the first half. Then came a very lucky goal gifted to them on a platter by Leicester, after which the Baggies were under siege. Nevertheless, Ben Foster was impervious in goal, and ultimately, the hosts could not convert their chances come the final whistle.
Sports Mole's man of the match
Saido Berahino: The 21-year-old did not get himself on the scoresheet against Leicester, a rarity for him given his sterling form of late, but he nevertheless caused plenty of trouble, coming forward at every opportunity and getting several chances in on goal as well as providing the assist for the own goal.
It's a no brainer for this game - the 47th minute Leicester own goal which ultimately gave the Baggies all three points. Morgan's diver header hit Cambiasso on the back and beat the dive of the despairing Schmeichel.
In a quite rare turn of events, the referee situation was newsworthy ahead of the match, with original referee Mark Clattenburg being taken off this game given his breach of protocol last week. Stuart Atwell, officiating his first game in the top flight since 2012, did not do a bad job. His decision not to award Leicester a penalty in the first half following Joleon Lescott's tackle was fair enough, while his penalising of Chris Wood late on also seemed justified.
Leicester: The Foxes, who could slip into the drop zone should Sunderland beat Crystal Palace on Monday, travel to Southampton on November 8.
West Brom: The Baggies welcome Newcastle United to The Hawthorns on November 9.