01 - In a large pot, combine orzo pasta, chicken broth, and diced chicken over medium heat. Bring to a gentle simmer, stirring occasionally, and cook until orzo is tender and chicken is cooked through, about 12 minutes.
02 - Stir in frozen peas, lemon juice, and grated Parmesan cheese. Continue stirring until peas are heated through and the mixture is creamy, approximately 3 minutes.