Season the diced chicken with garlic powder, Italian seasoning, 1 teaspoon Kosher salt, and ¼ teaspoon ground black pepper.
In a large 12-inch sauté pan (with a lid) over medium-high heat, melt 1 tablespoon of butter. Cook chicken until golden brown and cooked through. Remove from the skillet and set aside.
In the same skillet, melt the remaining 2 tablespoons of butter and cook the diced onions until softened, about 3 to 5 minutes. Then, add garlic and Italian seasoning, and cook for another 1 minute until fragrant.
Add the rice and stir until nutty and fragrant, about 2 minutes. Return the cooked chicken into the skillet.
Stir in the broth until evenly combined. Season with salt and pepper to taste. Bring to a simmer, and cook with the lid covered for about 18 to 20 minutes, until the rice is tender.
At this point, the rice should be tender with a little bit of broth still present. Stir in the heavy cream and grated parmesan cheese until incorporated and warm. Note: For this recipe, I included more broth than the standard ratio to help the cream incorporate better.
Finish with more parmesan cheese and parsley on top. Enjoy!