Plantain Frittata

Name: Plantain Frittata
Ingredients: 2 large ripe plantains (10 to 12 ounces each); 1 medium roma tomato (about 4 ounces); 1/2 large red onion (6 to 7 ounces); 8 large eggs; 1 1/2 teaspoons kosher salt, divided; 1/2 to 1 teaspoon cayenne pepper; 1/4 teaspoon freshly ground black pepper; 1/4 teaspoon smoked paprika; 1/4 cup vegetable oil; 1 sliced medium ripe avocado, for serving (optional); Hot sauce, for serving (optional)