Cut the chicken breasts into bite-sized pieces and season with salt and pepper.
Heat olive oil in a large skillet over medium heat. Add the chicken pieces and cook until golden brown and cooked through, about 5-7 minutes, stirring occasionally.
Add the minced garlic to the pan and sauté for about 1 minute until fragrant.
Pour in the chicken broth and heavy cream, then stir in the Italian seasoning, spinach, salt, and pepper. Let the mixture simmer for about 5 minutes.
In a separate pot, bring salted water to a boil and cook the gnocchi according to package instructions until they float to the top. Drain and set aside.
Add the cooked gnocchi to the skillet with the chicken and sauce, stirring gently to combine. Cook for an additional 2-3 minutes.
Stir in the grated Parmesan cheese until melted and creamy. Adjust seasoning if needed.
Plate the creamy chicken and gnocchi and garnish with extra Parmesan cheese and fresh herbs if desired.
For added flavor, consider adding a squeeze of lemon juice or some fresh herbs before serving.