Put a large saute` pan over a medium-high flame and heat 1 tablespoon of the oil. Using a fork prick the sausage links all over. Place the links in the saute pan and cook until browned on all sides, about 5-7 minutes. Transfer to a plate and slice the links in half. Set aside.
Preheat the oven to 450 degrees.
In a large mixing bowl toss together 1/2 cup of the oil, sliced potatoes, peppers, onions and garlic. Season with salt and pepper as desired.
Spread the mixture in a large roasting pan or a 13x18 inch baking sheet. Top with the sausage and roast for 30-40 minutes turning halfway though.