Your question should be showing the entire living floor, not just this isolated area..........which is a fail in too many ways to even list

So, will the 6 seat dining table need to go within the green square as well?

I am continually befuddled by gigantic walk-in pantries and closets. Such a waste of space. You have a kitchen. It is a work area. Why the need to "hide dishes and store daily appliances, coffee maker, air fryer, microwave, etc.?" Isn't that what the kitchen is for???

As for the WIC, you can store as many clothes in a well-designed reach-in closet as you can in the WIC. But the WIC has all that space to "walk around" in. Why?

Shrink them both and you'll cut down on wasted square footage.

Yes, the dining needs to fit within the green highlighted area as well.

Please listen?

show the entire plan and do not isolate this area.

The home has a bedroom, it has a bath.it has an entry.somewhere.

Show the whole

The kitchen faces what? A family room/great room? The bedroom with the walk in closet is where in your plan, and what does the bath look like?

Fill in all the blanks, and you will have much better advice than can be provided from a green outline box-----isolated from all ELSE

You need a good-sized space for a dining area that seats 6 comfortably. Within the green-bordered area, the dining area could go in the pantry area and the walk-in closet could be changed to a reach-in closet with the remaining space repurposed to a small pantry.

Other options - (1) change the island into a table for 6 that could double as extra counter space when needed; or (2) eliminate the island seating and add on a dining banquette to the island.

The above would not necessarily give you great flow. Consider posting your entire floor plan for better feedback. Your kitchen’s functionality is reduced because 3 sides are open to adjoining spaces or have windows & doors.

First we need a whole house plan. I agree that pantry is a huge waste of space and get into the habit of loading and running the DW when prepping for meals.. That pantry space can easily hold a dining space for 6 and the walkin closet has no context without the rest of the home layout ..