Just first noticing the light though nice doesn't seem to let the chairs be prominent. You want transitional, but a pretty drum/ simple light could do it...

You've seen unfinished furniture - what about a stain/ chalk paint in color to look good with both the chairs and the cabinets...

Ps we are leaning towards a round

Houzz is like a photo / library to me. Their table repeats wall tone. You could repeat something in the room, cause you said you have a few already. Espresso idk though cause so dark....

This ties in with floor - hey it has an adjustable table height! To tie in chairs, can have art framed that stain, or amber something --

We don't know much - whether rug is planned, etc.... but this is called Stone [like your floor's look?] and too large... to show also that you could chalk paint your chairs / washed. Overall: 78 - 110"W x 39.5"D x 29.5"H

But if you found a 'match' could be an elegant eat-in kitchen - this?

Interesting! with round table?

The layers of this modern hanging pendant lamp create an art deco aesthetic. Hanging crystals add to the lamp's classy style. Dimensions: 10"d x 13"h / Includes: Metal ceiling cap, black cloth cord, silver cord for reinforcement / Bulb type: (1) 40W (not included) / Can be plugged in or professionally hard-wired.

Is there brushed nickel around? or do you just like it? trimmed in dark brown [not black]

You need to make a decision on whether you want a pedestal or legs. I like this expandable round table from West Elm with those chairs:

Fishs Eddy Expandable Dining Table, Round, 42"-60", Walnut | west elm · More Info