SAN DIEGO — Any autobiography should be expected to make the author a little misty-eyed about days gone by.

But as Rep. John Lewis learned after working on “March,” the graphic novel chronicling his civil rights era activities, comic books can also pack a seriously emotional punch.

Per Lewis, staring at the artfully arranged way his collaborator, Nate Powell, depicted a silly anecdote about a wayward hen the Georgia Democrat once tended to really struck a chord.

While at Comic-Con 2013, Lewis also shared the fascinating trajectory that took from seminary student to civil rights leader to comics scribe — a totally new experience the seasoned pol thanked Powell and Andrew Aydin, his staffer and “March” co-author, for weaving into his incredibly multilayered life.