Yes baby food and baby food pouches can be brought through airport security.
You can bring any baby food you want through airport security to feed your baby and those baby food pouches are less messy and easy to carry onto the plane for your baby.
The baby food pouches are wonderful to feed your baby when on plane trips as well as road trips as they do not require messing with spoons or jars.
I've brought baby food pouches onto the plane several times for my baby and I love how easy they're too feed the baby with as they can hold the baby food pouch and eat it easily without much or any help from the parent.