Corn Fritters With Spicy Zucchini Salsa

Name: Corn Fritters With Spicy Zucchini Salsa
Ingredients: 1½ cups cherry tomatoes, halved lengthwise; 1½ cups diced zucchini; 1 medium red onion, diced, divided; 3 large cloves garlic, finely chopped; 1 jalapeño chile, seeded and diced; ½ teaspoon sea salt, divided; 1½ tablespoons extra-virgin olive oil; Olive oil cooking spray; ½ cup chopped cilantro, divided; 2 tablespoons fresh lime juice, divided; 1 cup all-purpose flour; ½ teaspoon ground cumin; ¼ teaspoon baking powder; 1 egg; 2 cups corn kernels (thawed if frozen)