Chicken is literally a quarter of the price of beef, of course people are eating more chicken. Just a reminder meatloaf, which would now cost at least $15 to feed a family of four, used to be one of the cheapest meals. And outside the anglosphere more people are able to afford meat at all, and chicken and pork are the meats of choice for the world because of their incredibly low cost and relatively low environmental impact; modern cooking techniques and knowledge also pretty much entirely eliminates the risk of food-born illness from historically famously risky sources.
Chicken is literally a quarter of the price of beef, of course people are eating more chicken. Just a reminder meatloaf, which would now cost at least $15 to feed a family of four, used to be one of the cheapest meals. And outside the anglosphere more people are able to afford meat at all, and chicken and pork are the meats of choice for the world because of their incredibly low cost and relatively low environmental impact; modern cooking techniques and knowledge also pretty much entirely eliminates the risk of food-born illness from historically famously risky sources.
Chickens can also be raised with very little land and just some basic resources. Cows need large amounts of pasture, barns, special equipment, etc.