Cut each onion into six wedges.

Place in a bowl and sprinkle with coarse salt, thyme leaves, and two tablespoons olive oil.

Mix well and roast in oven at 400°F (200°C) until onions become soft and caramelized. Remove from oven and set aside.

In a large pot, cook pasta according to package directions.

Reserve 1/2 cup of cooking water from pasta.

Pour two tablespoons olive oil into a large frying pan. Lightly fry garlic slices and chili pepper rings over a medium flame.

When garlic and pepper are soft, add caramelized onions, chopped olives, and cooked pasta. Add the 1/2 cup of cooking water. Season with salt and pepper.

Raise flame and mix well. Remove from flame and add Parmesan and chopped parsley.