Preheat the oven to 450°F. Line a baking sheet with parchment paper and set aside.
Marinate the chicken: In a blender, combine the chipotle chiles, onion, tomato, garlic, brown sugar, cumin, salt and pepper, and blend until smooth. Place chicken in a shallow dish or plastic bag and pour over half of the marinade, then toss to coat the chicken evenly. Set aside and marinate for 30 minutes on the counter or up to overnight in the refrigerator.
Make the extras: While the chicken is marinating, make the cilantro lime rice, black beans and guacamole according to recipe directions.
Cook the chicken: Arrange the chicken on the parchment-lined baking sheet and place in preheated oven. Bake for 15-17 minutes, or until a meat thermometer inserted in the thickest part reads at least 165°F. Let rest for a few minutes, then cut into bite-sized pieces.
Assemble: Spread a healthy scoop of the guacamole in the middle of a warmed tortilla, then pile on the rice, beans, chicken, cheese and sour cream. Roll it up (wrap it in foil to hold it together better) and enjoy with a drizzle of chipotle hot sauce, or more of the marinade you set aside earlier if you like it extra spicy.