Cut, toss, roast. Sheet pan sausage and peppers might be the easiest high protein Wednesday dinner that exists. Five minutes of prep, the oven handles the rest.
Preheat the oven to 425°F and line a large sheet pan with parchment paper for easy cleanup.
Slice the Italian sausage links into 1-inch pieces. Cut all peppers into strips and slice the red onion.
Add sausage, peppers, and onion to the sheet pan. Drizzle with olive oil, sprinkle with dried oregano, salt, and black pepper.
Toss everything on the pan to coat thoroughly. Spread out in an even layer so pieces roast rather than steam.
Roast in the oven for 25–30 minutes, stirring once halfway, until sausages are browned and peppers are caramelized. Serve hot.