01 - Whisk together lime juice, soy sauce, olive oil, Worcestershire sauce, cumin, chili powder, garlic powder, smoked paprika, salt, and pepper in a large bowl or zip-top bag. Add chicken breasts and turn to coat thoroughly. Seal and refrigerate for at least 2 hours, up to 8 hours for maximum flavor penetration.
02 - Combine ranch dressing, salsa, mayonnaise, lime juice, and chili powder in a small bowl. Whisk until smooth and fully incorporated. Cover and refrigerate until serving time.
03 - Heat grill or grill pan to medium-high temperature, approximately 400°F. Ensure grates are clean and lightly oiled to prevent sticking.
04 - Remove chicken from marinade, allowing excess liquid to drip off. Place on preheated grill and cook for 6 to 8 minutes per side, turning once, until internal temperature reaches 165°F. Grill marks should be well-defined and chicken should be springy to the touch.
05 - Transfer grilled chicken to a baking sheet. Spread 2 to 3 tablespoons of Mexi-Ranch sauce over each breast. Divide shredded cheese evenly among the four pieces, covering the sauce layer completely.
06 - Place baking sheet under oven broiler for 1 to 2 minutes, watching closely to prevent burning. Broil until cheese is fully melted, bubbly, and beginning to brown slightly at the edges.
07 - Plate each chicken breast immediately. Top generously with crispy tortilla strips and a generous spoonful of pico de gallo. Serve while hot and cheese remains melted.