01 - In a large pot or deep skillet, heat the olive oil over medium-high heat. Add the diced chicken, season with salt and pepper, and cook until golden and cooked through, about 5-6 minutes. Transfer to a plate and set aside.
02 - To the same pot, add butter. Once melted, add onion, carrots, and celery. Sauté until softened, about 5 minutes.
03 - Sprinkle flour over the vegetables, stir, and cook for 1 minute to form a roux.
04 - Gradually add chicken broth while stirring to avoid lumps. Bring to a gentle simmer. Add orzo, garlic powder, thyme, and parsley.
05 - Reduce heat to medium-low and cook uncovered, stirring occasionally, until orzo is al dente, about 10 minutes.
06 - Stir in cooked chicken and frozen peas. Simmer for 3 more minutes.
07 - Add heavy cream and Parmesan. Stir until creamy. Adjust seasoning with salt and pepper.
08 - Serve hot, garnished with more parsley or Parmesan if desired.