Preheat your oven to 425°F (220°C) to ensure crispy gnocchi and caramelized vegetables.
In a large mixing bowl, combine chopped red bell pepper, orange bell pepper, red onion, and grape tomatoes.
Drizzle 3 tablespoons olive oil over the vegetables. Sprinkle garlic powder, salt, black pepper, oregano, basil, and crushed red pepper. Toss to coat evenly.
Add the uncooked potato gnocchi to the bowl and gently mix until everything is evenly coated with oil and seasonings.
Transfer the gnocchi and vegetable mixture onto a sheet pan, spreading it out evenly to avoid steaming.
Roast in the preheated oven for 20-25 minutes, stirring halfway through. The gnocchi should be golden and vegetables tender and slightly charred.
Sprinkle freshly shaved parmesan cheese over the dish during the last 5 minutes of roasting to melt and crisp slightly.
Remove from oven, garnish with fresh herbs if desired, and serve hot.