Betta Fish: Is it ok to feed betta fish fish? + Weight check

I cook a lot of seafood, and i was wondering uf its ok to give a little bit of fish/shrimp to my boy?

Ive done ut once, with some white mullet, and some shrimp. I gave him two lil chunks, abpu 1.5mm squares i cut with nail scissors lol.

But i realised that im not sure if its tge healthies- thoughts?

Also including some pics, i wanna check if im not overfeeding in general! My first fish so i dunno if i can tell a chubby fish yet-