Sweet and Spicy Antipasto Salad

Name: Sweet and Spicy Antipasto Salad
Ingredients: 6 long red sweet peppers or 4 red bell peppers, seeds removed; 6 red Fresno or other spicy red chiles, seeds removed; 6 garlic cloves, peeled; ½ cup plus 1 tablespoon olive oil; Kosher salt, freshly ground pepper; 4 tablespoons red wine vinegar, divided; 1 Hungarian wax pepper, sliced; 1 Italian frying pepper, sliced; 8 ounces mozzarella, torn into pieces; 2 ounces cured fennel salami, thinly sliced; 2 teaspoons marjoram or oregano leaves; Slices of country-style bread, toasted (for serving)