– 1 1/2 lbs. boneless and skinless chicken thighs – ▢Salt – ▢Ground black pepper – ▢3 tablespoons unsalted butter – ▢3 cloves garlic (minced) – ▢1 cup chicken broth – ▢1/2 cup heavy whipping cream – ▢1/4 cup grated Parmesan cheese – ▢2 tablespoons lemon juice – ▢1 tablespoon Japanese mirin (optional) – ▢Salt to taste – ▢2 small tomatoes (cut into wedges) – ▢2 cups spinach – ▢1 tablespoon chopped parsley