In a medium bowl, marinate the diced chicken with olive oil, adobo sauce, smoked paprika, garlic powder, cumin, salt, and pepper. Toss to coat evenly and let it sit for at least 15 minutes (or up to 2 hours in the fridge for more flavor).
Heat a skillet over medium-high heat. Once hot, add the marinated chicken and cook for about 7-10 minutes, stirring occasionally until the chicken is cooked through and has a nice smoky char.
While the chicken is cooking, warm the corn tortillas in a separate pan for about 30 seconds on each side until pliable, or you can wrap them in foil and place them in a warm oven (200°F) until ready to serve.
To assemble each taco, place a generous spoonful of the smoky chipotle chicken onto the warm tortilla. Top with shredded red cabbage, a slice of avocado, and a sprinkle of chopped cilantro.
Serve with lime wedges on the side for squeezing over the tacos, and add a dollop of sour cream if desired.
Notes
Marinating the chicken for longer enhances the flavor.