This looks like a joke, a disgruntled employee, or both.
You can clearly see that there is proper cheese sauce on the macaroni, but then there's just sixnine or ten heat lamp nuked slices of American Cheese* added haphazardly.
*For anyone lucky enough not to know what that means, imagine cheese whiz solidified and packaged into individually plastic wrapped slices.
Probably a customer not realizing the preparation and complaining that the cheese wasn't cheesey or as velveeta-ey as they were used to, and malicious compliance ensued.
"Oh no! We are almost out of Liquid Cheese Product #3. We don't even have enough to make this batch of macaroni!"
"Just make this batch with the rest of the Liquid Cheese Product #3 that we have, then add some slices of Semisolid Cheese Product #2 on top. No one will be able to tell the difference."