Cook the pancetta in a skillet on medium heat until the pieces begin to brown. Transfer the pancetta to a plate lined with paper towel. Save the pancetta grease.
To caramelize the onions, saute onion slices in the pancetta grease until translucent. Sprinkle with the brown sugar, pepper and cayenne pepper then turn down the heat to medium-low. Allow to cook for about 45 minutes uncovered. Stir occasionally.
Preheat oven to 425°F.
In a food processor place flour, baking powder, salt, and sugar. Pulse a few times to combine all the ingredients.
Add in the butter and continue to pulse until the mixture forms resembles a coarse meal. Do not over pulse or you will end up with a ball of dough.
Transfer to a large bowl. Add the figs, pancetta, caramelized onions, and thyme.
Slowly add in the half and half while mixing with a spatula or wooden spoon.
Transfer dough to a floured surface, and knead the dough until it comes together. The dough will be moist, but able to be rolled.
Using a rolling pin, roll out dough into the shape of a rectangle that is about 12" x 6" by ¾".
Cut the rectangle in half lengthwise. You will now have 2 rectangles that are 12" x 3".
Cut each rectangle into 4 pieces. Cut each rectangle across in order to make two triangles.
Line a baking sheet with parchment paper and place rectangles on top. Place in the freezer for about 10 minutes.
Brush with cream then immediately bake for about 15 minutes, or until cake tester comes out clean. The scones should be slightly brown.