So much for life after Arsene Wenger being fraught and a worrying leap into the unknown.
They find themselves fourth in the table ahead of bitter rivals Tottenham on goal difference.
"We worked very hard in the second half for this result", Arsenal manager Unai Emery told reporters.
"Sooner or later they will be on the end of a big score - defensively they are all over the place", he said.
Revitalised with new boss Unai Emery, Arsenal have seen an upturn in fortunes, and find themselves heading into the worldwide break just two points adrift of the leading trio of Manchester City, Chelsea and Liverpool in the Premier League, but Lacazette insists nobody is getting ahead of themselves.More news: Red Dead Redemption 2 Is 60 Hours Long
The Frenchman posed a constant threat to Fulham's creaking backline, which has shipped 21 goals already this season, and his endeavour was duly rewarded with two fine goals and a colossal score of 95/100 on the Goal Pressure Index, presented by Sure and powered by Opta.
Lacazette and Aubameyang scored two goals each, with Aaron Ramsey netting the other one for the visitors.
Combative yet technically adept, the diminutive Uruguayan's displays at the heart of the Arsenal midfield are backed up by a series of extremely impressive numbers that show a tangible impact on his new side - and have even led to comparisons with club greats such as Gilberto Silva on social media. It revived memories of the passing move from which Jack Wilshere scored for Arsenal against Norwich in 2013, and sparked the "We've got our Arsenal back" chant.
Aubameyang, who scored his 15th and 16th goals of his Arsenal career in the 5-1 dismantling of Fulham, has now scored 16 goals in 23 appearances since his move from Borussia Dortmund in 2018, superior to Henry's start in 1999. It helped, of course, that Fulham again played such an expansive style that is bound to give opponents chances. "We need to be the same way in our matches: calm, finding our best performance and combination of players", he said when asked about the win, Arsenal's ninth in a row in all competitions.
City, Liverpool and Chelsea, the current top three, still look to be a notch above.