Question:
What is the halacha of having a non Jew at your pesach seder
Answer:
The halacha is that one should not host a non Jew for a yom tov meal. The reason is since he might cook for him, which is not allowed on yom tov. We may only cook on yom tov for those that are observing the yom tov.
Sources:
O:CH 514-1