We have the same problem in our dining room. And the real 'ACK' part is that we gutted our whole kitchen/dining area and removed the old ceiling, so we could have addressed it properly the first time. Once the new dining room table was in, it was obvious we would be moving it off centre (pathway to deck is behind table), and we're kicking ourselves. DH is planning to buy a plaster medallion to put up on the ceiling, so that the edge of it will cover the old hole. Luckily, he is an electrical engineer, so he can do the rewiring. I COULD patch the hole, but what a LITERAL pain in the neck. So not only will the fixture be off-centre, but medallion will be too. I am pretty sure it will cost you more than $35 extra on top of the first $35 to rewire in a new location- assuming there is enough wire up there to allow the move. Ours is accessible from the attic.

Had to do that with my dining area. The fixture was centered in the room, but you can not put the table centered in the room since there would be no where to pass by. So when I changed it from the fugly Early American hurricane/copper chandy to a more contemporary lamp with a black chain, I had to swag it to center over the table. It does not look weird at all. This is the only pic I can find. I don't know why it looks like there is a black wire sticking up, it's not really there. But you can see I have a small swag.

Can't find how to edit... photos uploaded out of order from the way I added them, but hoping you all can see the issue. Thanks again!

It appears that your chandelier is too high. The bottom of the fixture should be about 30” from the table top. Since lowering it while it is that off center would create other problems, I''d be happier with swagging the light to the center of the table and lowering it.