Just two- 3 will look odd.

Two. And what is "large" in inches exactly? And what is the ceiling height, and do I see an arch in that niche?

There is no arch. just 2 posts on either end. the island is 12ft long and the ceilings are 9ft. here is a better picture.

You have a nice space, I would not clutter it with pendants. Add additional recessed lights.

I agree with @HU-545516693 - you have enough vertical elements - don't add more or it will look excessive

Recessed lights no pendants.

IMO reccessed lights there no pendants and turn on the llights in the hood too.