Avocado Toast Panzanella

Name: Avocado Toast Panzanella
Ingredients: 5 cups cubed French bread; 3 tablespoons extra-virgin olive oil; Kosher salt and freshly ground black pepper; 1/2 cup extra-virgin olive oil; 1/4 cup fresh lemon juice; 1 tablespoon Dijon mustard; 1 tablespoon minced capers; 2 teaspoons everything bagel seasoning; 1 pint grape tomatoes, halved; 4 Persian cucumbers, thinly sliced; 3 large avocados, cubed; 1/2 red onion, thinly sliced; 15 fresh basil leaves, torn; 1/2 cup crumbled feta cheese or queso fresco; 4 medium-boiled eggs, halved