There are 32 dishes ranked on this page. The lightest is Eomuk at 100 kcal per 1 skewer (with a cup of broth), the heaviest is Korean Fried Chicken at 950 kcal per Half a yangnyeom chicken (반마리, about 8 pieces), and the average lands around 484 calories a serving. 6 of them come in under 300 calories, and 10 are 600 or more.
That spread is the whole point. Two dishes off the same menu can be 850 calories apart, which is more than most people's entire daily deficit. Knowing which is which costs you nothing and changes the outcome.