How to Make It
Heat a medium skillet over high heat. Add oil to pan; swirl to coat. Pat tuna dry with a paper towel. Sprinkle tuna with salt and pepper. Add tuna to pan; cook 2 minutes on each side or until desired degree of doneness. Transfer tuna to a cutting board; cut across the grain into 1/4-inch-thick slices.
Warm tortillas according to package directions. Divide tuna evenly among tortillas. Top each taco with 1 tablespoon salsa, 1 1/2 teaspoons sour cream, and 2 avocado slices. Serve immediately.