Rabbit eating, but not alot

He's recently put on some weight, when I was away. He is very active in himself still, binkying like mad and having loads of cuddles. He's always been a good eater but recently (past few days) has been leaving some of his food.
Gave him broccoli last night, he ate some of it but there is still some there this morning, same happened with dandilions and herbs (which he did eat all of after awhile).

I'm keeping an eye out, especially as he was always a fatty (hence why I call him Fatty). I've had a feel of his stomach, which seems fine to me.
Went to the vets with him 2 weeks ago, which was all fine. His teeth were great.

Think it may be worth a vet trip, especially if it goes downhill.

I'd think teeth... maybe spurs on the very back ones that the vets cant see properly?

*HUGS* to him New photos please