Dice the chicken breast into small, bite-sized pieces.
Heat the extra virgin olive oil in a large skillet over medium-high heat.
Add the diced chicken and ground beef to the skillet, seasoning with sea salt, black pepper, chili powder, and ground cumin.
Cook the meat for 6 to 8 minutes, breaking the beef into small crumbles, until the chicken is golden and the beef is fully browned.
While the meat cooks, warm the corn tortillas in a separate dry pan or directly over a low gas flame for 30 seconds per side until soft and pliable.
Finely dice the white onion, chop the fresh cilantro, and thinly slice the radishes.
Assemble the tacos by dividing the chicken and beef mixture evenly among the three tortillas.
Top each taco with the diced onion, fresh cilantro, and sliced radishes.
Serve immediately with fresh lime wedges to squeeze over the top for a bright finish.