Add the vegetable oil, lime juice, chili powder, smoked paprika and cayenne pepper to a small bowl and whisk to combine.
Arrange the tortillas on a clean work surface. Using a pastry brush or a silicone brush, lightly brush the tortillas with the lime spice mixture. Be sure to just lightly coat the tortillas in the mixture; do not oversaturate them. Flip over the tortillas and lightly coat the other side as well.
Stack the tortillas and cut them in half, then cut each half into 3 chip-size wedges (6 wedges per tortilla). Transfer the wedges to 2 rimmed baking sheets and arrange them in an even layer, making sure not to overlap any. Sprinkle the salt evenly over the wedges on both baking sheets.
Bake until the chips are golden and crispy, about 15 minutes. Transfer the chips to a wire rack to cool slightly before serving.