In a large bowl, combine oats, protein powder, salt, chia or flax (if using), and half the orange zest. Stir to distribute evenly.
In a small microwave-safe bowl, gently warm almond butter and honey for 15–20 seconds to soften. Stir in vanilla and orange juice.
Pour the wet mixture into the dry. Use a sturdy spatula to fold until the oats are fully coated. It should look thick, not crumbly.
Fold in cranberries, nuts, and remaining orange zest. If the mix feels too dry, add 1 teaspoon more orange juice at a time. Too sticky? Sprinkle in 1–2 tablespoons oats.
Cover and refrigerate for 15–20 minutes. This firms the mixture and makes rolling way easier.
Scoop about 1 heaping tablespoon per bite and roll into 18–22 balls. If using coconut, roll bites in coconut to coat lightly.
Place on a parchment-lined sheet and refrigerate 30 minutes to set. Transfer to an airtight container.