Heat 2 tablespoons of neutral oil in a large pan or wok over medium to high heat. Add the garlic and cook for about 30 seconds until fragrant.
Add the frozen vegetables and cook for 2 to 3 minutes, stirring often, until heated through and any excess moisture has cooked off.
Push everything to one side of the pan. Crack in the eggs and scramble until just set, then mix them through the vegetables.
Add the cooked rice, breaking up any clumps with your spoon. Pour over the soy sauce and sprinkle in the chicken stock powder, then toss well to coat everything evenly.
Cook for another 4-5 minutes, stirring often, until the rice is hot. Taste and adjust with white pepper and extra soy sauce if needed, then serve.