172 with skin
110 no skin
https://nutritiondata.self.com/facts/poultry-products/701/2
https://nutritiondata.self.com/facts/poultry-products/696/2
This is a pretty solid database. When looking up, take note if skin is included, since that adds a lot of calories in fat. Always weigh raw - accounting for moisture lost during cooking is a fool’s game.
Not an expert, but I had this question myself last year.
I think the answer is that raw chicken breast is ~120 cal. and cooked is ~165.
This also checks out when you look at the weight of the chicken after cooking.
I.e. a 100gram portion, which was 120calories raw, once cooked, will STILL be ~120 calories, but the weight of the portion would be decreased due to moisture loss during cooking.
Of course, there is still the matter of what happened to fat attached to the meat that get rendered out, and also the consideration of what cooking oil (if any) is being used.