Creamy Garlic Butter Chicken with Spinach and Bacon

 chicken thighs, boneless and skin off (or chicken breast)

 teaspoons olive oil

 tablespoons butter

 cloves garlic, finely diced

 small yellow onion, diced

 cup chicken broth (or dry white wine)

Crispy bacon, chopped

 cups half and half

 cups baby spinach leaves

Salt and fresh cracked pepper

Italian seasoning

 cup fresh grated Parmesan cheese

Crushed chili pepper flakes, optional

 teaspoon cornstarch (cornflour) mixed with 1 tablespoon of water (optional, if you like a thicker sauce)