Step 1: Prepare the Cheeseburger Filling

1. Heat a large skillet over medium heat. Add the ground beef and cook, breaking it apart with a spatula, until browned and fully cooked, about 5-7 minutes.
2. Drain any excess grease from the skillet.
3. Add the diced onion and cook for an additional 2-3 minutes, until softened.
4. Stir in the ketchup, mustard, garlic powder, onion powder, smoked paprika, salt, and pepper. Mix well to coat the beef evenly.
5. Remove the skillet from heat and let the mixture cool slightly.
6. Once cooled, stir in the shredded cheddar cheese and diced pickles. The cheese will begin to melt slightly, binding the mixture together.

Step 2: Assemble the Egg Rolls

1. Lay an egg roll wrapper on a clean surface with one corner pointing toward you (like a diamond shape).
2. Spoon 2-3 tablespoons of the cheeseburger filling into the center of the wrapper.
3. Fold the bottom corner over the filling, then fold in the two side corners to create an envelope shape. Roll tightly toward the top corner, sealing the edge with a brush of beaten egg.
4. Repeat with the remaining wrappers and filling.

Step 3: Fry the Egg Rolls

1. Heat 2 inches of oil in a deep skillet or heavy-bottomed pot to 350°F. Use a thermometer for accuracy.
2. Fry 3-4 egg rolls at a time, turning occasionally, until golden brown and crispy, about 3-4 minutes.
3. Transfer the cooked egg rolls to a plate lined with paper towels to drain excess oil.