Earlier in the week the Belgium international told the club he would not be signing a new £140,000-a-week contract that would make him the best-paid player in their history, as he questioned whether they had the ability to reach the Champions League.
Two goals and an assist in a thumping win over Hull duly proved Lukaku's value to the Toffees, with the Belgian striker now two goals ahead of second-placed Harry Kane in the race for the Golden Boot.
Lukaku looks increasingly likely to win the award with Tottenham striker Kane out for up to six weeks with another ankle ligament injury.
Alexis Sanchez's goal was not enough to prevent Arsenal losing 3-1 at West Brom, but the strike moves him on to 18 goals for the season to keep him in contention.
Diego Costa (17) failed to score as Chelsea beat Stoke 2-1 late on at the bet365 Stadium, while Zlatan Ibrahimovic is stuck on 15 goals with two games of a three-match ban still to serve.
Golden Boot odds (via 888Sport)
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Odds correct as of March 18 at 6:30pm.