Child who "chipmunks " food

I have a toddler who will keep food in their mouth during meals, mostly breakfast and snacks. She will sit fine but just puts the food in her mouth but doesn't chew or doesn't want to. Today I nearly panicking because she just sat there with a mouthful of unswallowed food. Is this normal? I have a lot of years experience with Toddlers but can't honestly say I have seen this I have seen kids chew and spit out food or eating boycott all together. I did address it to mom and dad at pickup.