Combine shrimp, oil, and spices in a medium bowl or ziplock bag. Use right away OR cover and refrigerate for at least 10 minutes or up to 48 hours. Heat a large heavy-duty or cast iron skillet on high heat for 2 minutes. Add a teaspoon of oil to the pan and shrimp. Cook shrimp until pink and cooked through, about 4-5 minutes.
To make the Slaw
Combine all the ingredients in a large bowl until mixed through. Use right away or cover with plastic wrap and place in the fridge for up to 24 hours.
To make creamy Sriracha Sauce
Whisk sriracha and ranch or sour-cream or mayo in a small bowl. Taste and add more sriracha if desired.
Grill tortillas on the stovetop over the flame until lightly charred (this step is optional). Top each tortilla with 4-5 pieces of shrimp and some slaw. Drizzle with sriracha sauce. Serve with lime wedges on the side. Enjoy!!