Don't look at me with eyes who see a pathetic person...

I appreciate your thought, but...

As expected, this is too...

The part under your nose is stretching too much.
(??????? is an expression of happiness/satisfaction but from an impure motive. Maybe this line could be roughly translated as "You are smiling kinda weird")

Having no immunity to that

It's not stretching!

Here, say 'Aaah...'

Sayuri has made the size easier to eat.

Maybe it's a little hard for you to use the chopsticks...