1. Place chopped onions and garlic in crockpot.
2. Dissolve bouillon cubes in hot water add adobo and chipotles, put in crockpot.
3. Season pork cubes with salt and oregano and place in crockpot.
4. Cook on low for 6 hours.
5. Spoon cooked pork into a jelly roll pan, pour orange juice and sprinkle orange zest on top.
6. Bake in a 400 degree oven for approximately 30 minutes stirring occasionally to crisp up all sides of pork cubes.