That sequence became six defeats in eight on Monday night as West Brom were made to pay for a slow start – and Fatawu’s fabulous finish late on.
An excellent team move, which included fine one-touch play between Bobby De Cordova-Reid, Fatawu and James, had the Baggies chasing the game after 18 minutes when Ayew pounced for his fifth goal of the season.
A goal-line clearance from Ricardo Pereira denied Mikey Johnston a leveller on the half-hour mark, with the hosts also fortunate not to concede a penalty in the build-up to the chance when Hamza Choudhury appeared to shove Aune Heggebo.
The visitors only had to wait another four minutes for Grant to restore parity, while George Campbell almost nodded them ahead before the break with an effort that skipped across the face of goal.
Leicester’s Ben Nelson had a header flash just wide of the post immediately after the interval, but it was West Brom that dominated the chances over 90 minutes.
Price had a shot diverted onto the woodwork by the outstretched leg of Caleb Okoli, while Heggebo, Samuel Iling-Junior and Campbell were all denied by Stolarczyk in a man-of-the-match performance by the home keeper.
And Fatawu punished Mason’s men in devastating fashion as the game appeared to be heading for a draw, meeting a pinpoint cross from Stephy Mavididi to crash home the winner from 15 yards out.