There are about 60 kids in this classroom.
Chips (a.k.a. fries) are probably one of the easiest things to 3D print, since they’re a single homogeneous block of starches fried out of all recognition, with a simple element sprinkled on after. They’re probably also really easy to reprogram to have a wide array of added flavours. The only reason I can think of to NOT do that is if you don’t live in a domed city in Antarctica where food printing technology is more ubiquitous and cheaper than growing and shipping potatoes from another continent (which in our world is still really really cheap). None of that means they won’t taste good, though.

↓ Transcript
Panel 1: Girl 2, snarkily: "Every Martian does it. I fink it's their national anfem or somefing."
Panel 2: Maida gets out the tablet that her actual work is on. Maida: "Well! They are better. But one thing you learn on Mars is you only learn anything if you put the work in."
Panel 3: Maida: "I've got six months to teach myself calculus. So I guess that's what I'm doing." Girl 1, losing interest: "Fair enough! Couldn't be me."
Panel 4: Girl 2, coyly: "Hey alien sistah, do you want to go wiff us to the chip shop round the corner after school? They're factory-printed, but they have tandoori flavoured."
Panel 5: Girl 2, drooling slightly: "And mint sauce! Mint sauce flavour chips! Ehhhhh."
Panel 6: Maida, sighing: "I can't. Sorry. I have to go to work straight after."
Panel 7: Girl 2: "S'alright. Some other time, yeh?" Girl 1 puts her head in her hands. Girl 1: "ooh. I made myself 'ungry." Meanwhile the class of sixty or so students waits, mostly bored or chatting, while the teacher continues to argue with one student. Mr. Gamar, shouting: "Deputy head's office! NOW!!"