Heat 1 tablespoon of vegetable oil in a large skillet or wok over medium-high heat. Add diced chicken and cook until browned and cooked through, about 5-7 minutes. Remove chicken from pan and set aside.
2
Add remaining oil to the same pan. Sauté garlic and onion until fragrant, about 2 minutes. Push to the side and pour beaten eggs into the skillet, scrambling until just set.
3
Add cooked rice to the skillet, breaking up clumps. Stir in cooked chicken, frozen peas and carrots, soy sauce, and sesame oil if using. Mix well and cook for another 3-5 minutes until heated through.
4
Taste and adjust seasoning with salt and pepper. Garnish with chopped green onions before serving.