Start by seasoning both sides of the chicken breasts generously with salt and freshly ground pepper.
In a large skillet, heat the olive oil over medium-high heat. Once shimmering, carefully place the chicken breasts in the skillet. Cook them for approximately 6-7 minutes on each side, or until they are golden brown and cooked through.
In the same skillet, reduce the heat to medium. Add the minced garlic and sauté for about 1 minute until fragrant.
Carefully pour in the chicken broth and heavy cream, using a whisk to combine them until smooth. Increase the heat slightly and bring the mixture to a gentle simmer.
Add the chopped sun-dried tomatoes and Italian seasoning to the skillet, stirring well to incorporate all ingredients. Allow the mixture to simmer for about 2-3 minutes.
Gradually whisk in the grated Parmesan cheese, ensuring it melts completely and creates a luxuriously creamy sauce.
Toss the fresh spinach into the sauce and continue to cook for about 1-2 minutes, or just until the spinach has wilted.
Return the previously cooked chicken to the skillet, spooning the creamy sauce over it to coat well. Allow it to simmer together for an additional 2-3 minutes.
Taste the sauce and adjust seasoning with additional salt and pepper if needed.
Serve the chicken hot, beautifully garnished with fresh basil leaves.
Notes
For an elegant display, serve over pasta or rice and garnish with extra Parmesan and basil.