What’s the point of providing nutritional data on raw bacon? Nobody eats raw bacon, do they?
You don't want to have to cook your bacon and then measure its mass before you know how many calories it has when you can just log the raw form before you cook it.
Having to cook your food first, take it out, measure it, and put it back in the dish you're making before you can estimate content doesn't seem like a recipe (pun) for habit forming here. Nor is it viable for anything but the most basic dishes like individually pan frying large ingredients.