Slow down. The location may already be GFCI protected.
Do not panic and install GFCI receptacles. This location is probably already GFCI protected, because this should have been done some time ago. Let's check that.
Putting GFCI protection at a point already GFCI protected is bad, because a trip will trip all the GFCIs, and they are very difficult to get reset.
Every GFCI device has the ability to protect other outlets. Anyone smart will exploit that fact to allow one GFCI device to protect all the outlets on the circuit. (Sadly they are not so smart about applying the stickers; so the outlet gets red-flagged as not protected when it is.) We can test that. First, search for GFCI devices:
look at the breakers in your panel to see if any of those are GFCI breakers.
search the area near the panel for anything that looks like a GFCI receptacle but may not have any sockets.
look around in the area around the kitchen for GFCI receptacles.
Now there are a couple ways to proceed. One is you can plug a load into the socket in question, and trip every GFCI one at a time and see if this socket loses power. Another way, if the outlets are grounded, is you can get a $6 GFCI tester with 3 lights, red yellow and yellow. If 2 lights come on, you are grounded and the "Test" button will work. See if it trips a GFCI somewhere.
If either test confirms that it is actually GFCI protected, stick a sticker or some other marking that says "GFCI Protected". That satisfies the GFCI requirement.