Chipsi is used for french fries or fries. Either is correct in English. In context, it is also correct to say you have cooked the fries. Duoling is very inconsistent in the use of English articles such as "a" or "the."
I'm a little confused about your comment. Isn't french fries also accepted?
Agreed about the articles. Report when you see them.
I see "chips", so...
Chipsi can be French fries or chips.