Maybe poor Kevin was thinking of a hired gun? A hot hand? Hot pie from Game of Thrones? It's not clear, but he seemed to think, at least for a moment, he was going to nail it. Then he kind of gets lost in thought before plowing forward.
'Jeopardy!' isn't easy and being put on the spot makes it even harder. Maybe it was just an off-night for Kevin. He had a little trouble putting his response in the form of a question during "Final Jeopardy!" as well.