Humans actually are ‘supposed’ to eat meat with where we are from an evolution point of view. Our bodies are able to receive nutritional benefits from different meat products (cow, chicken, insect, whatever). If we were not “supposed to eat meat”, we would receive zero nutritional benefits from the meat. It would literally just travel right through our digestive system. Our teeth are also right now in a state that can easily chew through meat or plant-based products.
It’s like how cows will sometimes accidentally eat an insect when munching on grass. Because their system is not built for any type of animal-eating behavior (solely herbivore), the insect literally passes right through them.