Poland took the lead when Bayern Munich striker Lewandowski found the net in the 30th minute following a precise pass from Paris St Germain's Grzegorz Krychowiak.
The hosts appeared to have sealed victory four minutes later when Napoli's Zielinski beat Chile keeper Gabriel Arias following a pass from Kamil Grosicki.
Yet Chile, who failed to qualify for the World Cup and were playing without their biggest names on Friday, got back in the game in the 39th minute when Diego Valdes headed home following a Polish defensive error.
Poland coach Adam Nawalka made a string of substitutions at halftime and they came out after the break in a more aggressive fashion with two strikers on the pitch as Napoli's Arkadiusz Milik joined Lewandowski.
Chile, however, levelled in the 56th minute through Miiko Albornoz.
Poland begin their World Cup Group H campaign in Moscow against Senegal on June 19.
(Reporting by Marcin Goclowski and Pawel Sobczak; Editing by Toby Davis)
