It is from French after all.
Edit: American audiobooks on the other hand seem to go 100% with nitch for some unexplainable reason.
This is funny to me because I often see people on the internet mentioning how strange it is that Americans leave off the 'h' when pronouncing 'herb'.
"so please welcome Herb Kim back to stage."
Even the poshest Brit will put the H in herb now.
Anecdotal, but I think this is only true for French. For example, I think U.S. Americans (even those with no Latin American ethnic background) are much more likely to pronounce Spanish loanwords in a way that's closer to the original than Brits are.
If my anecdotal belief is correct, I suppose it's largely because of the very close contact between the U.K. and France on the one hand, and the U.S. and Latin America on the other.
“Allo, allo, what ave we ere,” said the stereotypical constable.
And yet the British say "filet" with a hard 't'? I have never heard anything but the French pronunciation in the US.
Fillets or rounds are placed features that round off or cap interior or exterior corners or features of a part.