Mix together in a small bowl paprika, chili powder, oregano, salt, pepper and cumin.
Rub your seasoning on all sides of your skirt steak.
Set aside.
Mix together in a medium bowl orange zest, garlic, orange juice, soy sauce, vinegar, lemon juice, and cloves.
Set aside.
Pour in olive oil into your crock pot or slow cooker.
Add your seasoned skirt steak and pour your orange juice mix over it.
Cover and cook on low for 6 hours, turning over your beef half way through.
Take your meat out of your slow cooker and allow it to rest for 10 minutes.
Shred it with two forks and serve it right away.