17 mth old refusing fruit in chunks............

[sneekpeeks]

will eat fruit pots (so not the taste) and up until last week would eat banana, grapes and pear, in chunks, but all of a sudden won't even look at any of it and recoils if I offer it to him

Wondered maybe if something had happened at nursery, but checked in home diary and seems to have been eating it fine there.

Is it a faze ??
Should I just keep offering and hope one day he will accept again ??

So frustrating !!

Any advice would be gratefully received