This question already has an answer here:
In essays, or writing in general, is it more acceptable to include or leave out accents in French words (or even natively accented words in general)?
For example, would I say
The bread was served à la carte.
The bread was served a la carte.
The same thing applies to naïve vs. naive.
Does it depend on whether the word is commonplace or not? Meaning, French words integrated with English don't need to be spelled with accents, but more obscure words do? Does using an accent for a common French word in English seem pretentious?