In olive oil, sauté onions until they are transparent.
Stir in the garlic and simmer for another minute.
Black pepper, salt, basil, parsley, tomato, tomato sauce, and tomato juice should all be added.
Grilled chicken is added once the sauce has been reduced to a simmer.
Simmer the spaghetti until it is done.
Pasta should be cooked in salted, boiling water.
Pasta should be drained and sauced.
Serve with Parmesan cheese on top.