I vote for centering the table and having the buffet off center to match the table. Put a tall plant to the right of the buffet to make that area feel composed.

Looks like the builder centered the chandy between the bay window and the counter which forces you to have your table off center with the wall the buffet is on. Shame on them! So, I agree with powermuffin that you'll need to put the buffet off center to match the table. (Or get a buffet that fills the entire space)

It looks like the buffet would have to be against the wall to line up with the table, even with something on the other side of the buffet I think it'd look off. I don't see any problem with centering the table under the light and the buffet centered between the walls.

If getting a new table is an option then a round one may solve the clearance issue between the island, and can look more centered too

I think it's fine to have the table centered under the light and the buffet centered on the wall; it would look silly to me to have it any other way. Not sure why the buffet and table would have to be centered on each other because from every angle you view it, except directly head on, it would be off center from the table. Centered on the wall will look centered on the wall from whatever angle you view it.