Place a small saucepan over medium heat and add the orzo and butter.
Melt the butter and toast the orzo, stirring frequently, until lightly golden and fragrant, about 2–3 minutes.
Pour in the 14.5 oz can of chicken broth and add the garlic powder. Reduce heat to low.
Simmer gently, stirring regularly, until the liquid is absorbed and the orzo is tender, about 8–10 minutes. Keep heat low so the broth doesn't absorb before the orzo cooks.
Remove from heat and stir in the grated Parmesan until melted and creamy.