Preheat the oven to 500° and position a rack in the center.
In a medium bowl, mix the drained tomatoes and their reserved juices with the olive oil, honey, vinegar, thyme, shallot, garlic, parsley and crushed red pepper; season with salt and pepper.
Spread the hummus on the pita breads and top with the chorizo, shrimp and Manchego.
Bake directly on the oven rack for about 4 minutes, or until the shrimp are cooked and the cheese is melted.
Transfer the shrimp and chorizo flatbreads to a work surface.
Using a slotted spoon, top with the tomato dressing.
Quarter the flatbreads and serve at once.
