Set your oven to 375°F (190°C). Line a baking sheet with parchment paper for easy cleanup.
Open the can of crescent rolls and carefully separate the dough along the perforated lines to form 8 triangles.
Place one hot dog at the wide end of a dough triangle. Roll the dough around the hot dog, ending with the point tucked underneath. Place it on the prepared baking sheet. Repeat with the remaining hot dogs.
In a small bowl, whisk the egg and water together to make an egg wash. Lightly brush this mixture over the top of each rolled-up piggy.
Sprinkle the Everything Bagel seasoning or sesame seeds evenly over the egg-washed dough.
Bake for 12 to 15 minutes, or until the crescent rolls are puffed up and golden brown. Let them cool for 5 minutes before packing into lunchboxes.
Notes
Nutritional Information (per serving): Calories: 290, Total Carbs: 22g, Net Carbs: 22g, Fats: 11g, Protein: 14g.