This is probably Scrapper at his chubbiest. Food is his favorite thing ever and when I had two cats, I couldn't ration Scrapper without slighting the skinny one. But Scrapper also got chubby, like, overnight when he was 18 months old and filled out. He looked like a scrawny runt, then bam - big cat! He's twice the size of the 7lb average.
He's been an only cat for a couple years now, though, and I switched his food to a leaner high-quality variety.