Cut the chicken into bite size pieces and place them in a gallon size plastic bag.
Add the soy sauce, ginger, and garlic. Massage the bag until evenly combined. Marinate in the fridge several hours or overnight.
Yum Yum Sauce
Add the mayo, ketchup, sugar, paprika, and garlic powder in a bowl and whisk until evenly mixed.
Blackstone Chicken Fried Rice
Preheat the griddle to medium high heat for at least 4 minutes.
Add some oil and spread with hibachi spatula, add the rice, onion, and eggs. Cook 2 to 3 minutes, mixing together with hibachi spatulas.
Add the peas and carrots and cook 1 minute, mixing those together with the rice.
Add the soy sauce, butter, ginger, garlic, sesame seeds, and a small amount of kosher salt and pepper. Mix together and cook for 5 to 6 minutes, flipping the rice over occasionally.
During the last 2 minutes of the rice cooking, move the rice to the side to make room for the chicken. Add more oil and the chicken. Cook 4 to 5 minutes, flipping a few times and mix the chicken together with the rice.Note: Spreading the rice in a thin layer and pressing slightly with the spatula creates a nice, crispy rice.
Serve the chicken fried rice with the Yum Yum Sauce.