How and why are so many penalties being conceded this Premier League season?

The big screen indicates that the VAR is checking for a possible penalty at Tottenham (Clive Rose/PA)
Manchester United’s early penalty against Manchester City was the 92nd awarded in this season’s Premier League, already matching the total for the whole of last season.
Gabriel Jesus bundled over Anthony Martial to allow Bruno Fernandes to open the scoring in United’s 2-0 win at the Etihad Stadium.