Did the person happen to have a southern accent?

As someone from the south, that’s what “healthy” means when used to describe an amount of something. It means “a lot”.

Also, if you say someone looks healthy you’re basically calling them fat, depending on tone of voice and inflection.

Cheese is pretty healthy. It will actually make you feel full unlike processed junk food which bypasses the full feeling completely so you consume more.

Nah cheese is really good for you it is usually easier to digest than milk. It has some pretty important fats and all 9 essential amino acids. It is calorie dense which makes it a great pick me up snack. And if you're a vegetarian cheese is one of the few foods that fill the role of meat.

I will NOT have you slander such a noble foodstuff, vile heathen!

Is this racism against my people (The French) ? ^(/s)

way more cheese than you should eat at once

This is not a logical statement, for it cannot be true.

How is cheese unhealry?
Maybe trash cheese but not proper cheese products.

When the waiter comes to grate parmesan on my food I laugh and say that one block isn't going to cut it.

On keto fat/cheese is one of the recommended satiating foods. Eat as much as you want and be healthy in the context of the diet.