I'm a scout leader and creating meals for large groups whike camping is fun 😁
Yes, I am weird!
So I do similar to what a few have said - taking first 2 meals frozen. They also double up as ice packs for your cool box.
Chilli, bolognese, curry, stew etc all freeze well.
I've also done macaroni cheese at camp - make a batch of cheese sauce and freeze in advance. Let it defrost and add to your boiled pasta and warm through.
Soup - I either take veggies all grated in a freezer bag, and cook whilst there, or jjst take veggie soup pre made.
Fajitas - easy to do on one ring, as is a stir fry with straight to wok noodles.
BBQ 2 or 3 nights - burgers one night, maybe chicken/prawn skewer the other. Think someone suggested cous cous - great shout.
Pinterest has loads of one pot camping meals.
Our scouts had a go at pizzas on the BBQ. They weren't bad and good fun for kids to try.
All day breakfast one night? Sausage, bacon, mushrooms, eggs etc all done in one pan?
Fish parcels with veg done on the bbq? Wrap salmon or whatever in foil with lemon, herbs, leeks or something? Fish cooks nice and quickly.
Buy a cooked chicken or two, crusty bread and salad from the shop to habe a night off cooking.
Takeaway or eat out one night.
Lunches I'd just do sandwiches or rolls with banana, crisps, nutella etc
Breakfast - big pot of scrambled egg, pot of porridge, take ready made pancakes or croissants, crumpets are ok in the frying pan rather than grill or toaster too.
If really worried, Go Outdoors have 1 ring burners with 4 cans of gas for about £15-20 just now.
Hope that helps