Gluten-free Savory Amaranth Waffles

Name: Gluten-free Savory Amaranth Waffles
Ingredients: 1/3 cup (38g) amaranth flour; 1/3 cup (35g) oat flour; 1/3 cup (40g) sweet rice flour (different from "white rice flour" or "brown rice flour"); 1/4 cup (29g) tapioca starch/flour; 2 teaspoons baking powder; ½ teaspoon salt; ¼ teaspoon pepper; ½ cup + 3 tablespoons whole milk; 2 eggs, separated; 3 tablespoons melted butter; 1 tablespoon 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 olive oil; Juice of 1 lemon; Salt and pepper, to taste