Preheat your oven to 425°F (220°C). Prepare your baking sheet or pizza stone by lightly greasing it with olive oil.

Roll out your pizza crust to your desired thickness, ensuring the edges are slightly thicker. Brush a light layer of olive oil across the surface.

In a mixing bowl, combine the shredded chicken with the cranberry sauce, stirring until thoroughly coated.

Spread the chicken and cranberry mixture evenly over the crust, leaving a small border. Layer with slices of Brie cheese, followed by shredded mozzarella and red onion.

Drizzle with olive oil and sprinkle thyme, salt, and pepper over the top.

Bake the pizza in the preheated oven for 12-15 minutes, watching for the cheese to melt and the crust to turn golden brown.

Remove from the oven and allow it to cool slightly before topping with fresh arugula or spinach.

Slice your pizza and serve warm as a main dish or appetizer.