In a large skillet over medium heat, brown pork in 1 1/2TB oil. Season it with salt and pepper to taste, then transfer to the slow cooker. Add remaining oil skillet and saute onion, garlic, bell pepper, and jalapeno till the onion is trranslucent. Place the saute veggies on top of pork, then add green sauce and broth. Cover and cook on low heat for about 6 hours, or until the pork is tender. Remove pork and let it rest for about 5 minutes before slicing.