In a large skillet or wok, heat some oil over medium-high heat. Add diced chicken and minced garlic, and cook until chicken is cooked through and garlic is fragrant.
Push the chicken to one side of the skillet and add beaten eggs to the other side. Scramble the eggs until fully cooked.
Add mixed vegetables to the skillet and cook until they are tender.
Add chilled rice to the skillet and stir-fry everything together, breaking up any clumps of rice.
Pour soy sauce and sesame oil over the rice mixture, and continue to stir-fry until everything is evenly coated.
