Preheat the oven to 425 degrees F. Line a sheet pan with parchment paper.
Place the zucchini in a colander and toss with 1 teaspoon kosher salt. Let stand for 15 minutes. Squeeze out the excess water from the zucchini using paper towels.
In a large bowl combine the zucchini, corn, Parmesan, flour, scallions, egg and pepper.
Scoop the fritters by the 1/4-cup-full onto the prepared pan. Lightly press down into a 3-inch-diameter disc, spacing 2 inches apart on the sheet pan. You should end up with 10-12 fritters.
Bake until lightly golden brown, about 8-10 minutes per side.
While the fritters are baking, make the tomato salad. In a small bowl, whisk together the garlic, vinegar, olive oil, salt and pepper. Stir in the tomatoes and scallions.
Serve the fritters with the tomato salad.