Combine the olive oil, tequila, cilantro, lime juice, pineapple juice, vinegar, garlic salt, pepper, oregano, and seasoned salt in a blender; blend until smooth.
Place the shrimp in a bowl and pour the olive oil mixture over the shrimp; toss to combine. Cover and allow to marinate in the refrigerator 2 hours.
Place a skillet over medium heat. Cook and stir the shrimp in the skillet until cooked through, about 15 minutes.