Well, to me she looks like she has baby fat, and she's a baby, so.....what other people are fussed about is beyond me.
Natalie is about the same age and less chubby, but then again she's VERY active and has started burning of those fat rolls. Josie took longer to get mobile, but once she could crawl, she slimed down quick just burning calories!
When Josie was a baby, another family at the doctor's for the well-baby checkup at one year had a baby who was FAT - the child weighed THIRTY POUNDS!!!! Both parents were overweight and I could just imagine them feeding that poor little girl cheese doodles and pork rinds - I mean, you have to WORK to make a baby that fat.
Hope that puts things a little bit in perspective.
You can always counter un-asked-for comments with, "The doctor says she's just fine for her size, thanks," and change the subject.
JHMO, FWIW.