Preheat the oven to 400 degrees. Line a large baking sheet with parchment paper for easy cleanup if desired.
Toss the thawed vegetables (not including the corn yet) with the olive oil. Spread the vegetables out on the baking sheet. Roast the vegetables for 20 minutes, stirring every 10 minutes.
Add the corn to the baking sheet after 20 minutes and continue to roast for an additional 10-20 minutes or until the vegetables have the desired browness.
Spread the enchilada sauce over the top of your pizza crust - I used probably about 1/4 cup. Top the sauce roasted vegetables and then top with the mozzarella cheese.
Bake your pizza according to the package directions if using store bought or recipe instructions if using homemade.
Slice & serve hot!