Nuno guided Nottingham Forest into European football for the first time in 30 years last term.
Yet on this evidence, his ambitions for the present campaign may be limited to trying to ensure his latest employers do not drop into the Championship come May.
Another dispirited performance on the pitch arrived just days after a section of the club's support appeared in open revolt with their owners.
Hope of a new manager bounce has failed to materialise, with Nuno's tenure delivering just one point so far, from the first of his four matches at the helm.
A dreadful return of just four points in total represents West Ham's joint-worst ever at this stage of a league campaign, with the club replicating that tally in the second tier in 1932-33 and the 1973-74 campaign when they finished bottom.
The decision to start Scarles, a left-back at right-back, and Wan-Bissaka, who favours the right, on the left, appeared bewildering and directly contributed to Leeds' fast start.
And while striker Callum Wilson featured for the first time under Nuno, replacing England Under-20 international Scarles in the 25th minute, there was a disjointed feel to the Hammers' play until well into the second period after several further substitutes were introduced.
With two home fixtures on the horizon against Newcastle and Burnley, the Hammers need to arrest their awful form to prevent a full-blown crisis.