Bring the cream cheese to room temperature and set up a food processor. Finely chop the chives, reserve 2 tsp for garnish.
Pulse the cream cheese to break it up and then crumble the smoked trout on top. Process to combine.
Add the capers, dried dill, paprika and pulse to combine.
Add the zest of the whole lemon and squeeze the juice of about half of it. Pulse one last time to combine. Transfer to a mixing bowl. Fold in the chives. Transfer to a serving bowl and garnish with reserved chives and a pinch of paprika.