Mix together dry ingredients and coconut oil in a large bowl: pecans, almonds, coconut, pepitas, oats, salt (and coconut oil). Spread on a rimmed baking sheet.
Bake 10 minutes. Then let cool.
Whisk egg whites in a large bowl until foamy. Gradually add the coconut sugar while continuing to whisk.
Add the two (wet and dry) mixtures together. (It doesn't matter which you add to the other.) Stir until well incorporated.
Use a tablespoon or a cookie scoop to drop spoonfuls of the mixture onto a parchment-lined baking sheet. Space them evenly. You can place your 'cookies' pretty close to one another. They will not spread much.
Bake 15-20 minutes until golden brown. Transfer to a wire rack to cool. [They will get crispier as they cool.]
You can bake this mixture into pretty much any loosely structured shape...or no shape at all. If you want to make granola, simply spread the mixture in a thin layer on a parchment-lined rimmed baking sheet. Cook until golden brown. Crack it into pieces when cool.