Exactly.Totally fine in my opinion. I've read plenty of books that have pulled that off. I think as long as people understand why they were introduced to that character that it will work.
The first chapter of my WIP is from the perspective of a character other than the MC because it was important to see the event in the introduction through that character's eyes and know how she felt about it. The MC is then introduced in the next chapter. IMHO, it's working fine and I've read similar things with no confusion on my part, so it's not something I've ever worried about.