Alexandre Pato marked his Chelsea debut with a goal as the Barclays Premier League champions won 4-0 to leave Aston Villa teetering on the brink of relegation.
The home fans chanted against their players and owner Randy Lerner as the Blues took control in the second half.
Ruben Loftus-Cheek’s deflected shot and Pato’s precise penalty had given the visitors a healthy half-time lead.
Pedro scored twice – slotting in Oscar’s pull-back and hammering home a loose ball – before Alan Hutton was sent off to compound Villa’s misery.
Chelsea have now set the longest unbeaten run of any team in the Premier League this season, going 15 games without a loss, winning seven and drawing eight.
Ruben Loftus-Cheek scored his first Premier League goal in his 11th appearance.
Alexandre Pato is the sixth Brazilian to score on his Premier League debut, following Geovanni, Robinho, Gilberto, Ilan and Willian.
Oscar assisted Pedro’s first goal within a minute of entering the field at half-time.
Only Diego Costa (11) has scored more Premier League goals for Chelsea than Pedro (6) this season.