Preheat oven to 400 degrees.
In a large skillet, heat 1 teaspoon oil over medium-high.
Add sausage and ground beef, cook, breaking up meat with a wooden spoon, until browned, 5 minutes.
With a slotted spoon, transfer sausage/ beef mixture to a medium bowl.
Add 1 teaspoon oil to skillet along with onion and garlic, cook until onions are translucent.
Add drained tomatoes, season with salt and pepper and cook through
Add tomato mixture to bowl with sausage/beef, along with Parmesan, rice, and 1 teaspoon oil; stir to combine and season with salt and pepper.
Brush a rimmed baking sheet or shallow baking with oil and arrange bell peppers, cut side up, on sheet or baking dish
Divide rice mixture among peppers and top with crushed potato chips.
Bake until potato chips are browned and peppers are tender, about 30 minutes. Serve warm.