First off, I’ll admit I’m a bit idiosyncratic when it comes to reading, so don’t put too much stock in what I’m saying here.
Personally, I want to meet the protagonist asap. Definitely first chapter. It’s whose life I want to be part of, pretend to be, whatever. Possibly even why I bought the book in the first place. I can’t envisage having to wait over a chapter.
That said, maybe your prose style is engaging enough to overcome my impatience.