In a large skillet or pot, heat the olive oil over medium heat.
Add diced chicken to the skillet, seasoning with salt and pepper. Cook for about 5-7 minutes, or until the chicken is golden brown and cooked through. Remove the chicken and set it aside.
In the same skillet, add minced garlic and sauté for about 30 seconds until fragrant.
Stir in the orzo, mixing it well with the garlic and the remaining oil. Allow it to toast slightly for 1-2 minutes.
Gradually pour in the chicken broth. Stir to combine, and bring the mixture to a simmer.
Let the orzo cook in the broth for about 10-12 minutes, stirring occasionally until it absorbs most of the liquid and becomes tender.
Reducing the heat to low, stir in the heavy cream and grated Parmesan cheese until well incorporated, creating a creamy sauce.
Return cooked chicken to the skillet along with optional frozen peas; cook for another 2-3 minutes to warm everything through.
Taste your dish and adjust seasoning if needed by adding more salt or pepper as per your preference.
Remove from heat; garnish with chopped parsley before serving.