Tickets to the event will be refunded.
Cost to attend the event at the I-X Center had ranged from $15 to $1,000.
Penn was one of the few guests at Kucinich's 2005 wedding and has been a big supporter of both his presidential campaigns.
The Sunday event was a "Valentine's Fun Raiser."
Kucinich faces four Democratic challengers for his seat in the March 4 primary.
Former state Rep. Jim Trakas, a Republican, is also running for Kucinich's 10th District congressional seat.
All five Democratic candidates take part in a City Club debate February 19.
It will be carried live on Channel 3 that day, beginning at 12:30 p.m.