506 to 526 calories. According to a small pot that loves cooking, KFC cheese smoked chicken cloud Tang Zhong toast consists of a piece of toast, a piece of chicken breast and a little cheese, in which the calories of toast are 150 to 170, the calories of chicken breast are 276 and the calories of a little cheese are 80. KFC is one of the multinational chain restaurants in the United States, and the second largest fast food and the largest fried chicken chain enterprise in the world.