First you'll need to preheat the oven to 400 and line a baking sheet with parchment paper.
In a large bowl combine the flour, baking powder, sugar and salt, mix well.
Cut your cold butter and cream cheese into small cubes and place in with the dry ingredients.
Using a pastry cutter 2 knives cut the cream cheese and butter pieces into the flour mixture blending until the mixture is soft and crumbly. Alternately if you don't have a pastry blender or don't want to do it by hand you can place the dry ingredients, cream cheese and butter in a food processor and pulse them until the mixture is crumbly.
In a medium bowl whisk together one whole egg and milk.
Add the egg mixture to the flour mixture and stir together with a wooden spoon or spatula.
Add in 1 ½ Tbsp chopped chives, fold to stir in evenly.
Place the scone dough on a lightly floured surface and knead gently until smooth and well mixed.
Then pat the dough into an 8x6 rectangle. Cut into 8 equal pieces (each will be 3x2)
Arrange the scones 2 in apart on your prepared baking sheet.
In a small bowl whisk egg white and water. Brush across the tops of the dough and sprinkle with everything bagel seasoning and remaining chives.
Bake scones for 20- 25 minutes or until golden brown on top.
Remove from oven and allow to cool a little before serving. Can be served or warm or completely cool.
Store in an airtight container.