Cooking for just one person is very difficult, so I usually have leftovers when I cook. I always eat them, usually I bring them for lunch the next day.
All the time, it's only 3 of us - (my parents and me) so we don't eat huge meals but my mom usually makes a huge pot of something like homemade mac and cheese and I love the leftovers but we don't usually have leftovers unless we have company.
of course there's always leftovers of pizza but not chicken unless my mom makes a lot.