Sauté the vegetables: Melt the butter in a deep skillet over medium heat. Add the onion, carrots, and celery. Cook for 5–6 minutes, stirring occasionally, until the vegetables begin to soften.
Add the seasonings: Stir in the garlic powder, thyme, rosemary, bouillon seasoning, salt, paprika, adobo seasoning, and black pepper. Cook for about 1 minute, until fragrant.
Make the roux: Sprinkle the flour over the vegetables and stir well to coat everything. Cook for about 1 minute to remove the raw flour taste.
Cook the orzo: Stir in the uncooked orzo. Slowly pour in the chicken broth while stirring. Bring the mixture to a gentle simmer and cook uncovered for about 10 minutes, stirring occasionally to prevent the orzo from sticking. Add a little extra broth if the mixture becomes too thick before the orzo is tender.
Add the cream and chicken: Stir in the heavy cream and cooked chicken. Continue cooking for 2–3 minutes, until the chicken is heated through and the sauce is creamy. This is where the Chicken Pot Pie Orzo develops its rich, comforting texture.
Finish with peas: Add the frozen peas and cook for another 1–2 minutes. Taste and adjust the salt and pepper as needed.
Serve: Garnish with fresh parsley and optional Parmesan. Serve warm with biscuits or a simple side salad.