After scoring 344 goals in 375 appearances for Bayern Munich, the Poland international has quickly adjusted to his new surroundings at Barcelona following his summer move.
Lewandowski has registered eight goals in six La Liga games, while he also scored a hat-trick in the 5-1 Champions League victory over Viktoria Plzen.
Following the impressive start to his Barcelona career, Lewandowski has the chance to break a La Liga record against Mallorca on Saturday.
The 34-year-old will need to score a hat-trick to better Cristiano Ronaldo's tally for the most goals scored in the opening seven games of a La Liga season.
A brace would see Lewandowski match the 10 goals scored by Ronaldo in the 2014-15 season, while it would beat Messi's nine-goal haul in the 2017-18 campaign.
After winning five and drawing one of their opening six league games, a win over Mallorca would move Barcelona to the top of the table ahead of Real Madrid's home meeting with Osasuna on Sunday.
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