Donald Trump -- I'll Sue Celeb Chef Jose Andres Too ... For Pulling Out of D.C. Hotel

Donald Trump's got a big problema with the celeb chef who was going to help him open his fancy new hotel in Washington, D.C. -- Jose Andres is yanking his planned flagship restaurant.

The famed chef and Spanish immigrant announced he's cutting ties with the new Trump International Hotel due to Donald's now infamous comments about Mexican immigrants.

Andres said Trump's remarks "make it impossible for my company and I to move forward." Andres -- who recently became a U.S. citizen -- was planning to open his flagship restaurant in the hotel.

Donald Trump Jr. immediately threatened legal action against Andres ... pointing out that he signed a 10-year lease, and due to an exclusivity cause he can't open a restaurant anywhere else in D.C.

Trump already sued Univision for $500 million after it backed out of the Miss USA deal.

We actually got Jose last week in D.C. -- and although he played coy with us, something was clearly cooking.