Preheat oven to 300 degrees F. Line several baking sheets with parchment paper or coat them with cooking spray.Advertisement
Whisk flour, salt and pepper in a medium bowl. Whisk egg whites and oil in a mixing bowl. Add flour mixture and whisk until smooth. Stir in cheese and parsley (or chives).
Drop batter by scant tablespoonfuls onto prepared baking sheets, making 4 wafers per sheet. Spread batter into 4- to 4-1/2-inch circles with a metal spatula or the back of a spoon.
Bake wafers, 1 sheet at a time, until entire surface is golden and firm, 15 to 20 minutes. Transfer to a wire rack and let cool.
Make Ahead Tip: Store in an airtight container for up to 4 days.