The reasons why the original flavor chicken is so high in calories:

1. Chicken content: The original chicken is made from chicken, which contains more protein and fat. Fat is a high-calorie nutrient, and chicken also contains a certain amount of cholesterol.

2. Fried processing: The original chicken is made by frying. During the frying process, the ingredients absorb the oil and increase the calories of the food. Moreover, fried foods usually form a crispy layer on the surface, which requires the addition of starchy ingredients such as flour, further increasing the calories.

3. Seasonings and sauces: Various seasonings and sauces are usually added to the original chicken to increase its flavor and texture. These seasonings and sauces tend to be high in sugar, salt and fat, further adding to the caloric content of the food. Calorie is a measure of energy stored in an object or food. In nutrition, calories usually refer to the amount of energy, also known as calories, contained in food. It is a unit of measure of energy required by the human body.