Prepare the Marinade:

• In a bowl, combine 1 tbsp each of Tajin, cumin, chili powder, chopped garlic, avocado oil, Mexican oregano, brown sugar, and smoked paprika.
• Add 2 tbsp each of soy sauce and Worcestershire sauce.
• Squeeze in the juice of 3 limes.
• Whisk everything together until well combined.
• Reserve 1 tbsp of this marinade for later use.

Marinate the Meat:

• If using skirt steak, tenderize it first if possible. For chicken, choose either breasts or tenders.
• Place your choice of meat in a ziplock bag or a shallow dish.
• Pour the marinade over the meat, ensuring it’s well coated.
• Seal or cover, and marinate in the refrigerator overnight. This allows the flavors to penetrate the meat, making it tender and flavorful.

Grill the Meat:

• Remove the steak or chicken from the marinade and pat it dry.
• For steak: Preheat your grill to its hottest setting. Grill the steak until it reaches an internal temperature of 135°F. This should give you a nice medium doneness after carryover cooking.
• For chicken: Grill over medium heat until the internal temperature reaches 160°F. It will carry over to the safe 165°F as it rests.

Cook the Vegetables:

• Slice 2 bell peppers and 2 medium sweet onions.
• In a pan, heat some avocado oil over medium heat.
• Add the sliced onions and peppers, and sauté them with the reserved marinade. Cook until they reach your desired level of tenderness. The marinade will add a flavorful glaze to the vegetables.

Assemble the Fajitas:

• Slice the grilled meat against the grain into thin strips.
• Warm some soft tortillas in the oven or on the grill for a few seconds on each side.
• Lay out the tortillas and add a portion of the meat and sautéed vegetables to each.
• Offer a variety of taco fixings like sour cream, shredded cheese, and other preferred toppings so everyone can customize their fajita.

Serve:

• Serve the fajitas hot, allowing everyone to roll their tortillas with their favorite combination of meat, vegetables, and fixings.
• Enjoy the burst of flavors from the richly marinated meat combined with the sweetness of peppers and onions, all wrapped in a soft tortilla.