For the frittata: Preheat the oven to 425 degrees F.
In an 8-inch nonstick, ovenproof saute pan, heat the oil over medium heat. Add the zucchini and cook until soft, about 4 minutes. Add the scallions and corn and cook until soft, about 3 minutes. Add the tomatoes and cook for about 1 minute.
Meanwhile, in a medium bowl, beat the eggs with 2 tablespoons of water. Add the egg mixture and cilantro to the pan along with some salt and pepper. Cook for about 8 minutes, lifting the edges with a spatula to allow any uncooked egg to flow to the bottom. Transfer the pan to the oven and bake until puffed and golden, 8 to 10 minutes. Pour the Mexican crema over the top and sprinkle with the cheese. Serve warm or at room temperature.
For the salad: Add the arugula, pepitas, cranberries, lemon juice, olive oil and some salt and pepper to a bowl and toss to combine. Top with Parmesan shavings