Heat a skillet over medium heat and add 1 tablespoon of olive oil.
Add the leftover pulled pork and stir occasionally until heated through, about 3-5 minutes.
Remove from heat and set aside.
Warm the black beans and rice in a small saucepan or microwave.
Warm the flour tortillas in a dry skillet or microwave for about 15 seconds to make them pliable.
Lay a warm flour tortilla on a flat surface.
Spread a spoonful of rice in the center of the tortilla.
Add a portion of the pulled pork on top of the rice.
Layer with black beans, shredded cheese, salsa, sour cream, and any additional toppings.
Fold in the sides of the tortilla and roll it up tightly from the bottom.
Heat a clean, dry skillet over medium heat.
Place the burrito seam-side down and cook for 1-2 minutes per side, or until golden brown and crispy.
Flip and toast the other side for an even crunch.