Season the chicken breasts with garlic powder, salt, and pepper. Dredge lightly in flour.
Heat olive oil and 1 tablespoon butter in a skillet over medium heat. Cook chicken until golden and cooked through, about 4-5 minutes per side. Remove and set aside.
In the same skillet, melt the remaining butter and sauté minced garlic until fragrant.
Pour in white wine and chicken broth, scraping up any browned bits from the pan. Simmer for 2-3 minutes.
Stir in Italian seasoning, heavy cream, and parmesan cheese. Cook until the sauce thickens slightly.
Add fresh spinach and cook until wilted, about 2 minutes.
Return the chicken to the skillet, spoon sauce over the top, and heat through for 2 minutes.
Serve hot, optionally garnished with extra parmesan or fresh herbs.