Italian Chicken Pasta

Ingredients

For cooking chicken:

4 thin boneless skinless chicken breasts (or 2 thick ones, halved horizontally and paper towel dried)
½ cup flour
1 teaspoon salt
¼ teaspoon black pepper
1 teaspoon garlic powder
2 teaspoons Italian seasoning
2 tablespoons olive oil

Pasta:

12 oz of spaghetti
White Wine Parmesan Sauce:
4 tablespoons butter
1 small yellow onion (or use ½ onion) chopped
4 garlic cloves minced
2 scallions chopped
2 small tomatoes diced
1 tablespoon flour
1 cup heavy cream
1 cup white wine
½ cup Parmesan cheese shredded
1 teaspoon Italian Seasoning
½ teaspoon salt more to taste
¼ teaspoon crushed red pepper flakes