Nobody knows how to pronounce gitea either. Half of people pronounce it "gi-te-ah".
On top of those, I've also heard the k at the end be replaced with h, which would also be correct, as per https://en.wikipedia.org/wiki/Chi_(letter)
The common pronunciation of latex /ˈleɪˌtɛks/ would be incorrect.
For Kubernetes, Wikipedia lists eight different pronunciations: /ˌk(j)uːbərˈnɛtɪs, -ˈneɪtɪs, -ˈneɪtiːz, -ˈnɛtiːz/, with the j after k being optional.
NGINX feels like the most straightforward out of these, even though it is rarely pronounced correctly.
As for myself, I like to call it NG Inks, as in next-gen tattoos, at least whenever I hear it pronounced wrong :)
Nobody knows how to pronounce gitea either. Half of people pronounce it "gi-te-ah".