Combine flour, yeast, and salt in bowl of stand mixer fitted with dough hook.
Add olive oil and water.
Mix with dough hook on medium speed until smooth, about 4-5 minutes.
Place in lidded plastic container that has been sprayed with cooking spray and snap on lid.
Allow to rise until doubled in bulk, about 1 hour.
Heat oven to 425.
Beat egg white and water together in a small bowl. Set aside.
Divide dough into 3 oz. portions.
Roll each portion into a rope about 24" long. (It doesn't have to be exact.)
After you roll out the rope, lift the ends and bring toward the center, twist together twice, and bring to bottom to form a pretzel shape.
Lightly press the dough down to seal it.
Let rest for 5 minutes.
While dough is resting, bring 3 quarts water to a boil.
Stir in baking soda.
Working with one or two pretzels at a time, slide pretzel into boiling water.
Wait 10-15 seconds, then flip pretzel over.
After another 10-15 seconds, remove pretzel using slotted spoon and place on sheet pan that has been coated with cooking spray.
Brush each pretzel with egg wash and sprinkle with pretzel salt.
Bake for about 15 minutes, until golden brown.