Preheat the broiler to high.

Place the oysters onto a large baking sheet.

In a bowl, combine the butter, ketchup, Worcestershire sauce, and Tabasco (or your favorite hot sauce), if using.

Spoon about a tablespoon of the mixture into each oyster shell - the exact amount will depend on the size and shape of the oysters. Sprinkle about a teaspoon of pork panko over each one.

Place under the broiler for 3-4 minutes or until the tops start to turn golden brown. 

Carefully transfer the oysters to a serving platter (try not to spill any of the liquid!), garnish with the chives or parsley (if using), and serve immediately.