Preheat the oven to 400°F and spray a large rimmed baking sheet liberally with nonstick cooking spray.
Make the chicken filling: In a medium skillet, add the shredded chicken, taco seasoning, water, and lime juice. Cook over medium to medium-high heat for 3–5 minutes, or until heated through.
2 cups shredded chicken, 2 tablespoon taco seasoning, 2 tablespoon water, 2 teaspoon lime juice
Warm the tortillas: In a dry nonstick skillet, warm each tortilla over medium to medium-high heat for about 20–30 seconds per side.
8 corn tortillas
Assemble the tacos: Place 1 tablespoon of cheese on half of a tortilla, add ¼ cup of the chicken mixture, then top with another tablespoon of cheese. Fold the tortilla in half. Repeat with the remaining tortillas.
1 cup shredded cheese
Bake: Arrange all the tacos on the prepared baking sheet and spray the tops with nonstick cooking spray. Bake for 12–15 minutes, or until the cheese has melted and the tacos are lightly crisp.
Make the dipping sauce: In a small bowl, mash the avocado with the lime juice. Stir in the ranch dressing, 1–2 tablespoons of milk (until it reaches your desired consistency), and garlic powder. Mix well and serve with the warm tacos.
1 avocado, juice of one lime, ½ cup ranch dressing, 1-2 tablespoon milk, ¼ teaspoon garlic powder