This should have been caught at that time when footings were formed and installed because you pull your line from the stakes and you drop your dimensions down bellow and put the stakes. 2' is being way off not to notice.

That being said it's not a preferred way of doing this, you can sister another footing next to if it's done the right way, and the additional footing that was added by the look of it in that picture, that footing is not looking too good, if they just widened the trench and mixed their own concrete and just dumped it there, that might be an issue down the road.

In General looking at the width of some of the footings some of them look so wide, what was there a reason for that? It looks like so much wasted concrete and money unless there is a reason behind that.

Good luck

As GN notes above, widening the footing with some ready-mix whipped up on the spot is not an acceptable fix.

Adding rebar to the walls will not strengthen the footings.

I would have excavated to undisturbed soil and had another yard or two brought in of the specified strength. In a similar situation, I've met ready-mix trucks at another site, had them pour into my lined utility trailer what was needed and brought it over to my site.

I'd also get out there with your 6' level. that block wall in the back of your photo that is turned towards the "front" of the photo looks wonky.

Is the misaligned footing in question at the garage door? If so, why are there vertical bars in it? Were horizontal dowels drilled into the misaligned footing before the additional concrete was poured? Is there rebar in the old and new footings? What is the nature of the undisturbed soil?

Take a lot of pictures and double check everything.

Why is the block at my yellow line so off?

Camera paralax? Every vertical plane appears out of plumb...trees too!

Camera operator error? :-)

My guess is because those blocks are not setting on top of each other, they are stepping away from the camera.