Heat the olive oil in a large skillet over medium heat. Add the diced onion and sauté until softened, about three minutes. The smell of the onions cooking is your first hint that these tacos are going to be incredible.
Stir in the shredded chicken, then sprinkle the cumin, paprika, coriander, oregano, salt, and pepper evenly over the top. Give everything a good stir so the chicken is coated in those delicious spices. Cook for about two minutes, allowing the flavors to seep into the meat.
Next, stir in the tomato paste and chicken broth. Bring the mixture to a simmer, then reduce the heat to low. Cook for 4 to 5 minutes, letting most of the liquid evaporate. Finally, squeeze in the fresh lime juice for a tangy finish.
While the chicken simmers, warm your tortillas in a dry skillet or wrap them in foil and pop them into a low oven. Heat the black beans in a small saucepan until they’re warmed through.
Place a scoop of the chicken mixture onto each tortilla, then add some black beans. From there, go wild with your favorite toppings. I love shredded lettuce, a sprinkle of sharp cheddar, and a splash of hot sauce for a little zing.