1: In a small mixing bowl, whisk together oyster sauce, granulated sugar, soy sauce, chicken bouillon, ketchup, black pepper, red chili flakes, lemon juice, and cornstarch. Set aside.
2: Boil spaghetti with 1 tablespoon of salt. Save 1/2 cup of starch water before straining. Wash spaghetti with cold water and set aside.
3: In a pan, add some olive oil and cut chicken breast into bite-sized strips. Marinate with salt and pepper and cook until golden brown. Remove from pan and set aside.
4: In a wok, add garlic and all the vegetables, and sauté for a few minutes until slightly softened.
5: Add chicken and spaghetti into the pan. Add spaghetti water and pour sauce over the top.
6: Continue cooking all the ingredients together for another 2 minutes.
7: Garnish with chopped green onions and sesame seeds, serve hot.
