Sheet Pan Gnocchi

Name: Sheet Pan Gnocchi
Ingredients: 1 1/2 lb. refrigerated, shelf-stable, or frozen gnocchi; 1 pt. grape tomatoes; 4 garlic cloves, finely chopped; 2 broccoli crowns, cut into florets; 2 medium bell peppers, seeded and cut into 1-in. pieces; 1 medium red onion, peeled and cut into 1-in. pieces; 1 1/2 tsp. kosher salt; 1 tsp. Italian seasoning; 1/2 tsp. black pepper; 1/4 tsp. red pepper flakes; 1/3 c. olive oil; 1 (8-oz.) container small fresh mozzarella balls or pearls, drained; 1/4 c. chopped fresh basil; 4 oz. baby arugula, for serving; Grated parmesan cheese, for serving