Soak eight 8-inch wood skewers in water for 20 minutes. Preheat the grill to medium high heat.
Thread sausage, peppers, and onion onto the skewers, alternating sausage, peppers, and onion.
Brush skewers with olive oil and season with salt and pepper, to taste.
Grill skewers, turning occasionally, until sausage is cooked through and peppers are blistered, about 13 to 15 minutes. Transfer skewers to a plate or platter and serve.
Note-Josh likes to use spicy Italian sausage.