Heat a heavy bottom dutch oven pan over medium-high heat and add olive oil. Season the pork all over with salt and pepper. Once hot, add pork to dutch oven and sear on all sides until golden brown (about 2 minutes per side). Remove the pot. Add the crushed tomatoes, ketchup, chili powder, cumin, smoked paprika, cinnamon, all-spice, cayenne pepper, orange juice, soy sauce and molasses.