Preheat the oven to 375°F (190°C).
Unroll crescent roll dough and separate into triangles.
In a mixing bowl, combine softened cream cheese, cheddar, diced jalapeños, garlic powder, onion powder, salt, and pepper until well blended.
Spoon cheese mixture onto the wide end of each triangle.
Roll dough from the wide end to the point, enclosing the filling.
Arrange rolled bites on a parchment-lined baking sheet.
Brush tops with beaten egg for a golden finish.
Bake for 12 to 15 minutes until golden brown and puffed.
Remove from oven and cool slightly before serving.