Preheat the oven to 400 degrees Fahrenheit (205 degrees Celsius).
Roll out the pizza dough on a floured surface to your preferred thickness.
Melt butter in a saucepan over medium heat and stir in flour to create a roux.
Gradually add heavy cream to the roux, stirring until smooth, and simmer until thickened. Season with salt and pepper.
Season the salmon with salt, pepper, and olive oil; cook until flaky.
Spread the cream sauce over the pizza dough, leaving a border for the crust. Top with flaked salmon, red onion, capers, and mozzarella cheese.
Toast for 10 minutes until golden and crispy.
Garnish with fresh dill, chopped parsley, and a squeeze of lemon juice before serving.
