» Michelle and Barack Obama are rediscovering romance: 'It's just the two of us'
And the Greater Chicago Food Depository, which says it distributes 159,000 meals a day, thanked the ex-president and his foundation in a tweet "for joining our volunteers today."
"We believe no one should go hungry, especially this time of year, and that's why we're working to address the root causes of hunger in Chicago and Cook County," the food bank said.
Obama and his family helped serve meals on the day before Thanksgiving at food banks in the Washington, D.C., area several years while he was in office.
In 2015, the Obamas helped feed military veterans at Friendship Place; in 2014, they were at Bread for the City; in 2011, they went to the Capital Area Food Bank; in 2009 and 2010, they chipped in at Martha's Table.
» Piedmont Driving Club's famous buttered saltines are perfect for the holidays