"We paid a heavy price for some mistakes and lost two very important points," Juve coach Claudio Ranieri said of Pellissier's last-gasp equaliser.
"It was a bit Jekyll and Hyde. We struggled in the first half, but found ourselves in the second and created many chances.
"We were able to take the lead and then at the end made a silly mistake. Chievo had four shots on goal and scored with three of them, but we accept it because this is football."
Ranieri defended his decision to replace Alessandro del Piero at halftime with David Trezeguet.
"It was simply a tactical choice. I decided not to take off [Vincenzo] Iaquinta because he is in great form right now and I would have been crazy to replace him," added Ranieri.