He's just gonna roll his eyes a bit at Lucy's reaction but he's smiling still. Wouldn't be Lucy if she didn't tease back. He'll take it as a sign that she's starting to feel better.
Lightly srapes the bottom of the pan so as to make sure there's not a bit wasted. Doing it quietly though while she gets the glasses.

"Feeling any better?" he asks on his way to put the pan in the sink to wash after they are done eating.