Buttons is less interested in her food

Buttons has been weird lately with her food and I don't know if I should be worried about it or not. We feed her a mix of wet and dry twice a day and she's always been all over it the second I put it out for her. Even before that, actually, because she usually sits in the kitchen with me while I'm preparing it for her. The last few days have been different; she takes all day and into the evening to eat her morning bowl. BUT. She still gets excited over her treats and she still wants whatever I'm eating. We're feeding her the same stuff so it's not a food change that could be causing this. She takes 2 pills with her food and I'm wondering if that might have something to do with it. She's been on the first one for a few months now, but the second one is fairly recent. A few weeks or so. Anyone have any ideas?