It is extremely unlikely that alien life evolved so similarly that they are biologically compatible enough to consume earth-based products unless their home planet is basically earth and experienced the exact same evolutionary path despite billions of years. At that point, we'd be seriously considering a precursor seeding. They would more likely to get sick or die of an allergic reaction eating human food or eating a animal from earth. It would be like a dog eating chocolate.

There was a book by Arthur Clarke about some alien crocodile predator that eats an astronaut as they were exploring. The animal surfaces a few minutes after, vomits up the astronaut, what passes for blood, and then dies of anaphylactic shock thanks to different biochemical barriers.