This comic shouldn't be about the chickens, it's the farmers who are doing the exploitation.

I find it kinda hard to understand how they are able to process nutrients into an egg so fast. and am inclined to believe that the nutrient composition would be very different, with the quick-layers being much less desirable.

That sounds like BS. Chickens evolved to take advantage of bamboo fruiting season which happened once in 7 years, so as soon as that time came, chicken population would increase rapidly. So people figured out if we feed the chickens a lot, they lay a lot of eggs. That was the whole reason to breed them.

If you could engineer any bird to lay 1-2 eggs a day from once a month, why only do this to chickens? Why not other birds? Why only chicken?

Edit: the heck, my app bugged out big time. Made 4-5 comments, sorry for that 😅

Nah, they bred them to lay more eggs. They are more than desirable. They WANTED this. More eggs = more money. Who cares about nutrition. LINE MUST GO UP