Start by seasoning your peeled and deveined shrimp with the Cajun seasoning. Toss them so every piece is coated evenly.
Heat the olive oil in a large skillet over medium heat. Add the chopped onion, diced red and green bell peppers, and minced garlic. Cook until the vegetables are soft and fragrant, about 5 minutes.
Add the seasoned shrimp to the skillet with the sautéed vegetables. Cook for 2-3 minutes on each side until the shrimp turn pink and opaque. Remove the shrimp from the skillet and set aside.
In a separate saucepan, bring the chicken broth to a boil. Add the orzo and cook according to package instructions until al dente, about 8-10 minutes. Drain and set aside.
Return the skillet with the vegetables to the stove. Pour in the heavy cream and bring to a gentle simmer. Season with salt, pepper, and a bit more Cajun seasoning if desired. Let the sauce thicken for about 3-4 minutes, stirring frequently.
Add the cooked orzo and shrimp back into the skillet with the creamy sauce and vegetables. Stir well to combine, adding a splash of chicken broth or cream if the sauce is too thick.
Sprinkle chopped parsley on top for a fresh pop of color and flavor. Serve immediately for the best texture and taste.