Uh-oh. Someone did not measure right.

Sure, you can have single gang boxes stacked. A receptacle is required at the peninsula anyway, even with one where those boxes are.

I find that an extremely odd place for switches myself. What was the logic of putting them there?

SEveral options
You can stack them above each other.
You can get a dual switch that fits into a single box.
Here are a couple of samples.

Or they come with switch receptacle combo. GFCI or three way are available.

petey_racer
re: odd place for switches, the gc said I could not have an outlet in my cabinets in the peninsula, not enough room.
I did want one outlet in that current location for the telephone. It is a central spot (near DR to the right, near LR straight ahead and in the kitchen.) I think there are 2 light switches, one for the pot lights above the peninsula, and one for the in cabinet lighting (tall cab just to the right)
I see now that there is room for an outlet behind the drawer in the last cabinet in the peninsula so I will push for that. I also have some empty space behind that small filler cabinet (just below current switches in pic) so maybe one of the pop-up outlets could work.
Where else can I have the inside cab lights? Can there be a switch inside?

joed
My gc said I could NOT have them stacked above one another.
That was my choice when they were planning out the locations.
Thanks for the pics of some options.
Can a dimmer work with those pictured options?
Thank you for the examples!

BTW I am in Vancouver Canada (incase codes are different)