Preheat oven to 350° oven. Line 2 baking trays with parchment paper.
Combine oats, pepitas, almonds and chia seeds in a large bowl. Whisk the egg white, maple syrup and cinnamon in a small bowl. Add egg white mixture to coat oats mixture and toss to combine. Scatter over lined trays.
Bake for 10 minutes, swapping trays on racks and stirring halfway through cooking. Remove from oven and sprinkle evenly with orange rind. Bake, for 2 minutes more or until granola is lightly golden. Set aside on trays to cool completely.