Boil the chicken breast and shred it into bite-sized pieces.
Cook the kalguksu noodles in boiling water.
Rinse the cooked noodles in cold water and drain thoroughly.
Julienne the cucumber, cabbage, and carrot.
Place the noodles, chicken breast, and vegetables in a bowl.
Make the sauce by mixing gochujang (Korean chili paste), soy sauce, vinegar, allulose syrup, and minced garlic.
Add protein powder and the sauce to the ingredients and mix well.
Plate and top with boiled egg and sesame seeds to finish.