Crispy Chicken and Waffle Sandwiches

Name: Crispy Chicken and Waffle Sandwiches
Ingredients: 1/3 cup buttermilk; 3/4 teaspoon hot sauce; 1/4 teaspoon granulated garlic; 1/4 teaspoon granulated onion; Kosher salt; 1 pound chicken tenders; Vegetable oil, for frying; 1 cup all-purpose flour; 1 teaspoon smoked paprika; Freshly cracked black pepper; 1 1/2 cups panko breadcrumbs; 1 1/2 tablespoons ancho chile powder; 2 large eggs; 1 stick salted butter, softened; 3 tablespoons maple syrup; 3 teaspoons hot sauce; 1/4 teaspoon cayenne pepper; 2 tablespoons vegetable oil; 3/4 teaspoon pure vanilla extract; 1 1/4 cups buttermilk; 1/2 cup seltzer; 2 cups all-purpose flour; 2 tablespoons sugar; 1/2 teaspoon baking soda; 1/2 teaspoon fine salt; 1 cup chopped scallions; Cooking spray; 2 tomatoes, thinly sliced