In a medium bowl, mix together olive oil, garlic and Southwest Chipotle Mrs. Dash. Toss shrimp into this mixture, coating shrimp well. Set aside to marinate.
Mix pineapple salsa ingredients in a small bowl. Cover and set aside.
Heat skillet over medium heat. Add shrimp mixture to pan and cook approximately 4 minutes, turning shrimp once, until heated through. Assemble tacos by dividing shrimp mixture among the 4 tortillas. Top with 1/4 cup shredded cabbage and 1/4 of the salsa mixture.