Garlic and herb cauliflower mac and cheese with bacon

Ingredients

• 1.1 kg cauliflower, trimmed and cut into small florets
• 1 tbsp olive oil
• sea salt and ground black pepper
• 2 tsp fresh chives, chopped
• 1½ tsp Italian seasoning
• 1 tbsp butter
• 2 garlic cloves, minced
• 225 ml heavy whipping cream
• 225 ml shredded mozzarella cheese, divided
• 125 ml finely grated parmesan cheese, divided
• 125 ml (60 g) shredded cheddar cheese
• 75 ml cream cheese, softened
• 110 g bacon, cooked crisp and crumbled