Heat oven to 325° F. In a large bowl, combine the coconut, almonds, sugar, lemon zest, and salt. Mix in the egg whites.
Drop mounds of the mixture (each equal to 2 tablespoons) onto 2 parchment-lined baking sheets, spacing them 1½ inches apart.
Bake, switching the baking sheets halfway through, until the edges begin to brown, 20 to 25 minutes. Cool slightly on baking sheets, then transfer to wire racks to cool completely.
Store in an airtight container at room temperature for up to 1 week.