he ate a lot of meat

Of course not, people had much more sense back then. I like to think that veggies were burnt at the stake in his time.

That's why he was fat and died young and could barely walk.

He'd have loved Burger King!

Actually salad was enjoyed by people of all social levels in the middle ages.

Pottage

https://en.wikipedia.org/wiki/Pottage

So does yer mother.

Watch this if you have not already seen it:

https://www.youtube.com/watch?v=ewLpXw6uN28

I've seen veggie recipes from that era, and they typically went something like "boileth thy vegetable an hour, andaddeth enough butter to cover" or "They saladmogundy (salad) requireth one part lettuces to five parts cold meat" .
Of course I was never invited to dine at Henry's table, but I assume that if someone had sent out lightly cooked vegetables or a nice crisp salad of lightly dressed leafy things, he would have thrown a shitfit and said it was only fit for the servants' hall.