01 - Preheat oven to 300°F. Line a baking sheet with parchment paper.
02 - Whisk egg white and water in a large bowl until frothy.
03 - Add pecan halves to the egg wash and toss until evenly coated.
04 - Combine brown sugar, smoked paprika, garlic powder, onion powder, thyme, oregano, cayenne pepper, salt, and black pepper in a small bowl.
05 - Sprinkle spice mixture over pecans and toss until thoroughly coated.
06 - Spread spiced pecans in a single layer on the prepared baking sheet.
07 - Bake for 20-22 minutes, stirring halfway through, until golden brown and fragrant.
08 - Remove from oven and let cool completely on the baking sheet. Pecans will crisp as they cool.