Summer Layered Salad with Grilled Chicken and Tomato Vinaigrette

Name: Summer Layered Salad with Grilled Chicken and Tomato Vinaigrette
Ingredients: 4 ripe medium tomatoes; Juice of 1/2 lemon; 3 tablespoons mayonnaise; 1 tablespoon white wine vinegar; 1 teaspoon honey; 1/8 teaspoon cayenne pepper; Kosher salt; 3 small boneless, skinless chicken breasts; 4 thick slices sourdough bread; 2 large ears corn; 1 medium zucchini, cut lengthwise into long 1/2-inch-thick slabs; 1 head romaine, shredded; 1 cup fresh basil leaves, plus more for garnish; 1 cup crumbled feta cheese