Line a jelly roll pan with foil. In medium sized bowl, combine egg white with 1 tablespoon water and whisk until foamy. Add pecans and stir until nuts are coated with egg white. Set aside.
In another bowl, combine sugar, salt, and cinnamon. Pour sugar mixture over moist nuts and stir to coat evenly.
In preheated oven,melt butter in jelly roll pan. Remove pan from oven and gently stir nuts into melted butter. Spread nuts evenly and bake for 20-25 minutes, stirring occasionally. Watch them so they don't burn.
Remove from oven and allow to cool directly in the pan.