Heat 2 teaspoons oil in a large skillet over medium-high heat. Add pork and cook for 8 minutes or until the pork loses its pink color. Remove from pan; keep warm. While pork is cooking, mix sour cream with chipotle powder, cumin and paprika. Set aside.
In same pan used for pork, add 2 teaspoons oil and, once heated, add bell peppers and onions. Saute 5 minutes or until tender.
Divide pork evenly among tortillas; top each serving with 1/2 cup of pepper & onion mixture, spoonful of spicy sour cream, and cilantro and squirt of lime is using. Enjoy.