Sauce: Heat a large skillet over medium. Once warm, add the oil and onion. Sauté for 4 minutes or until tender, stirring occasionally. Add in the garlic and cook for 30 seconds more. Stir in the chipotles, oregano, and cumin, and toast for 1 minute. Add in the tomatoes, stock, and salt. Bring to a simmer, and cook for 7 minutes.
Blend: Place the tomato mixture in a high-powered or regular blender, and blend until smooth.
Chicken: Slow cook seasoned chicken with goya season pack and pour sauce on top cover and cook on low for 2-3 hours or high for 1-2 hours. remove chicken shred and return to slow cooker mix well with sauce tast and add more kosher salt if needed
Serve: Prepare the garnishes. To assemble, inside the taco shells with the chicken and garnish with the lettuce, tomaotes, cheese, etc.
Let's eat