Cut mozzarella log lengthwise into 4 quarters, then cut each stick to about 2 inches long.
Whisk flour and salt together in a small bowl.
Whisk together breadcrumbs, onion powder, garlic powder, basil, oregano, and parsley in a separate bowl.
Whisk together eggs and water in a small, shallow bowl.
One by one, dredge mozzarella sticks in the flour mixture, tapping gently to remove excess. Then, coat in the egg mixture, followed by the breadcrumb mixture. (Pro tip: keep one hand dedicated to the dry mixture and the other for the wet.)
Place on a baking tray and freeze overnight.
The next day, add oil to a heavy-bottom pan at least 2- to 3-inches deep.
Heat oil until it reaches 350°F.
Gently place the sticks in oil one at a time. Fry for 2 to 3 minutes, or until golden brown. Don’t overcrowd the pan.
Remove sticks from the oil with a slotted spoon and drain on a paper towel– lined plate. Season with salt and serve with marinara dipping sauce.