Gluten-free Savory Amaranth Waffles

Name: Gluten-free Savory Amaranth Waffles
Cuisine: American
Ingredients: 1/3 cup amaranth flour; 1/3 cup gluten-free oat flour; 1/3 cup sweet rice flour (also called mochiko, different from "white rice flour" or "brown rice flour")); 1/4 cup Bob's Red Mill tapioca flour; 2 teaspoons baking powder; ½ teaspoon kosher salt; ¼ teaspoon freshly ground pepper; ½ cup + 3 tablespoons whole milk; 2 large eggs (separated); 3 tablespoons unsalted butter (melted); 1 tablespoon granulated sugar; 2 tablespoons French feta (crumbled (optional)); 2 tablespoons whole grain amaranth; 4 large eggs; 1 bartlett pear (cored and thinly sliced); 4 cups arugula; ½ small head fennel (shaved or thinly sliced); ½ tablespoon extra virgin olive oil; Juice of 1 lemon; Salt & pepper (to taste)