Zest and juice limes to get 1/2 teaspoon zest and 3 tablespoons juice. Add juice and zest to a blender or mini food processor with minced garlic, cilantro, 1/2 the seeded jalapeño (or more for a spicier sauce; add slowly if you like less heat), mayo, and sour cream. Add salt and pepper to taste. Blend or pulse until smooth. Refrigerate until ready to serve.
Pull chicken from the bones and shred or chop. Add BBQ sauce and mix to combine. If chicken is cold, warm it through in a pan over low heat.
In a large bowl, combine chopped cherry tomatoes, diced red onion, drained and rinsed black beans, and corn.
Remove 1/2 cup of the cilantro-lime sauce, and toss it with shredded green cabbage to combine. Set aside.
Spray both sides of the tortillas with cooking spray and “grill” tortillas on stovetop over the open flame until slightly charred. Alternatively, warm (covered with a damp paper towel) in the microwave. After tortillas have been warmed or charred, quickly fold them in half so they will fold easily when assembled.
To the tortilla, add the dressed cabbage, a few spoonfuls of BBQ chicken, and a few spoonfuls of the veggies. If desired, add avocado and fresh cilantro to each taco. Drizzle with extra cilantro-lime sauce and enjoy!
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Notes
Note 1: Here are some optional serving suggestions: fresh cilantro, fresh limes, and 1 large avocado.Storage: Store leftover BBQ chicken, black bean mix, and sauce separately in airtight containers in the fridge. Leftovers will last up to 3–4 days in the fridge.