Season the chicken breasts with salt, pepper, and Italian seasoning. Heat olive oil in a large skillet over medium-high heat. Sear the chicken for 5-6 minutes per side until golden brown and fully cooked. Remove from the pan and set aside.
In the same pan, add butter and garlic. Sauté until fragrant, then stir in the sun-dried tomatoes and red pepper flakes. Pour in the chicken broth and heavy cream, stirring to combine.
Add the orzo to the skillet, ensuring it is fully submerged in the liquid. Let it simmer for about 10 minutes, stirring occasionally, until the orzo is tender and has absorbed most of the sauce.
Stir in the Parmesan cheese until melted and creamy. Return the chicken to the pan, letting it warm through. Garnish with fresh basil before serving.