Preheat oven to 400 degrees F. Line a 15x10x1-inch baking pan with parchment paper; set aside. In a plastic bag combine panko, cheese, oregano, garlic powder, and pepper. In a small bowl combine egg and milk.
Add 1 cup of the vegetables to egg mixture; toss to coat. Using a slotted spoon, transfer vegetables to panko mixture in bag; shake to coat. Place vegetables in the prepared baking pan. Repeat with the remaining vegetables. Drizzle with melted butter.
Bake for 20 to 25 minutes or until vegetables are tender and coating is golden, stirring twice. If desired, serve vegetables with Easy Aioli.
In a medium bowl combine the mayonnaise and garlic. Whisk in the water, lemon juice, and salt until the mixture is smooth. Slowly whisk in the olive oil until combined and smooth. Cover and chill for at least 1 hour before serving. Serve with vegetables, shellfish, or beef.