In a large skillet, heat the olive oil over medium heat. Season the chicken breasts with salt and pepper.
Once the oil is hot, add the chicken breasts to the skillet and cook for about 6-7 minutes on each side, or until cooked through and golden brown. Remove from the skillet and set aside.
In the same skillet, add the minced garlic and sauté for 1-2 minutes until fragrant, being careful not to burn it.
Pour in the heavy cream, stirring constantly. Bring to a simmer.
Gradually whisk in the grated Parmesan cheese until melted and the sauce becomes creamy.
Add the dried basil and Italian seasoning, mixing thoroughly.
Return the chicken breasts to the skillet, reducing the heat to low, and let them simmer in the creamy sauce for about 5 minutes to absorb the flavors.
Add the baby spinach to the skillet and cook until wilted, stirring gently to incorporate into the sauce.
Adjust the seasoning if necessary, then remove from heat.
Notes
Serve with crusty bread or over pasta for a complete meal.