Pre heat oven to 220°C.

In a medium saucepan melt the butter over low heat, then add the flour and stir with a wooden spoon until it turns into a thick paste and cook for 1 minute, stirring.

Turn the heat up slightly and add the milk in batches, stirring continuously.

Add the garlic, salt and pepper and leave sauce to simmer for 2 minutes, then remove from heat and stir through cheese.

Spread over pizza bases, top with chicken, cheese then bacon and cook for 6-8 minutes or until golden and crispy.