Yeah, there was sadly too many people who was unable to resist that sweet option to consume whole raw pig head (including skin and bones) in the meantime between main hand and off hand attack ...
So Larian decided to abandon any healing by food entirely. :-/
Just bcs some (large enough, or loud enough ... strike out what does not apply i know wich i would bet) group of players was unable to resist doing something they despited with their whole heart.
Seems ridiculous? Thats bcs it is.
Drinking a potion during battle makes some sense since it's fast, but eating a meal doesn't since it can take a while. Having food restore health over several turns might make more sense, but that wouldn't be very helpful.