Drizzle or brush both sides of the baguette sliced with olive oil. Toast lightly. Distribute the sliced or crumbled blue cheese on top of the toasted bread, and place under a hot broiler for 2-3 minutes, until it begins to bubble. Place pear sliced on top of the blue cheese, and broil again for another 2-3 minutes until the pears are warmed and look a bit juicy.
Drizzle the pears with honey. Distribute the chopped hazelnuts over the tartine, and sprinkle with salt and pepper to taste. Serve while hot.