Start by seasoning the chicken breasts with salt, pepper, and Italian seasoning on both sides. Heat olive oil in a large skillet over medium heat. Cook the chicken until golden and fully cooked, about 5–6 minutes per side. Remove it from the pan and set aside so it stays juicy.
In the same skillet, melt butter and add the minced garlic. Stir for about 30 seconds until fragrant. Add sun-dried tomatoes and let them release their oils and flavor into the pan. This step creates the aromatic base of the dish.
Pour the orzo into the skillet and stir it into the garlic mixture. Add chicken broth and bring everything to a gentle simmer. Let the orzo cook, stirring occasionally, until tender and most of the liquid is absorbed.
Lower the heat and stir in heavy cream and grated Parmesan cheese. The sauce will thicken as the cheese melts. Add spinach and let it wilt naturally into the orzo, giving the dish a fresh, vibrant touch.
Slice the cooked chicken and return it to the skillet. Spoon the creamy orzo over the chicken so everything is coated. Finish with chopped fresh basil, then serve hot and enjoy.