I think the obvious answer is the fat in chicken isn’t that great for you. If you are limiting calories you want to get the most nutrient dense foods.
Avocados, olive oils, flax oil, nuts, mono and poly fats, hemp seeds, whole eggs, even beef fat is better in my opinion because beef is a better overall source of nutrients. It’s just not a great fat source.
I would rather use the chicken for what it’s good for....the clean protein from the breast and screw the rest.
I don't eat breast without pounding it out. Once you lay it on a wood cutting board and pound the thickest part out you'll never not do it. A good whole intact breast can be super tender and juicy but youve got to cook it perfect which is a thin line between cooked and the slightest bit of a tone of pink. Brown meat to me taste best ...pork and chicken. Love brown meat chicken on the grill. I lightly pound that out too. White or brown pounding and making it tender and more even in thickness cooks more evenly