Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper.
Slice the chicken sausage into 1/2-inch thick rounds and halve the baby potatoes.
De-seed the bell peppers and chop them into 1-inch pieces, ensuring they are similar in size to the potatoes for even roasting.
Place the sausage, potatoes, and peppers onto the prepared baking sheet.
Drizzle the olive oil over the mixture and sprinkle evenly with sea salt, black pepper, garlic powder, and dried oregano.
Toss the ingredients thoroughly on the pan to coat every piece in oil and spices, then spread them out into a single layer.
Roast for 25-30 minutes, tossing the mixture halfway through, until the potatoes are fork-tender and the sausage edges are crispy and browned.