Caesar Pizza

Ingredients

• • 4 large tortillas, about 9-inches (23 cm) in diameter or store-bought thin pizza crust squares
  • ¾ cup (180 ml) sour cream
  • 1 red onion, thinly sliced
  • 1 ½ cups (150 g) mozzarella cheese, grated
  • 1/3 cup (75 ml) mayonnaise
  • 1 tbsp (15 ml) lemon juice
  • 2 romaine lettuce hearts, torn
  • 8 slices cooked bacon, crumbled
  • 1 cup (170 g) cooked chicken, shredded
  • 1 tbsp capers, or more to taste
  • Parmesan cheese, freshly grated, to taste