If this is titled black leg which will obviously set up his fight this arc like it did Robin last chapter you seriously think events will shift around in one chapter so much it ends with sanji vs king lmfao
Actually it would be quite simple.
Jack arrives at the treasure room and Sanji kicks him off the room making him fall on the live floor (Drake did the same intentionally). Yamato, Momo and Shinobu notice Sanji and reach him. Momo comes out (Sanji gag) and goes to Kinemon.
Jack tries to attack them but Yamato stops him.
The Mary in the room sees Momo and inform King, that immediately decides to go there
The chapter ends with the Sanji vs King clash.
I don't believe it's going to happen so soon but, as you can see, a similar scenario isn't absurd or hasty and one chapter completely focused on the Sanji situation would be enough to cover it.