Start by patting the flank steak dry with paper towels.

Sprinkle taco seasoning evenly over the steak on both sides.

Heat a skillet over medium-high heat and add olive oil.

Place the steak in the hot skillet and cook for about 4-5 minutes per side for medium-rare.

Transfer the steak to a cutting board and let it rest for 5 minutes.

Slice the steak against the grain into thin strips.

Lay a tortilla flat and layer with shredded lettuce, diced tomato, a sprinkle of cheese, and a generous portion of sliced steak.

Fold in the sides of the tortilla and roll it tightly.