In a large bowl, add your chicken breasts and toss them with chili powder, oregano, salt, cumin, pepper, minced onion, and ancho chile powder. Rub the spices into the chicken well. Then, dredge each chicken piece in flour. This will give you a light, crispy texture once cooked.
Heat a large oven-safe skillet on medium-high. Slice your lime and place the slices directly onto the skillet. Let them cook for 1–2 minutes per side until they get that nice charred edge. Remove and set aside for garnish later.
Add 2 ½ tablespoons of oil to the same skillet. Once it’s shimmering, add the chicken pieces. Let them cook for about 3 minutes per side until they turn golden brown. Remove the chicken and set it aside—you’ll bring it back soon!
Now add the remaining oil to the skillet. Toss in the corn, sliced jalapeños, and minced garlic. Stir and cook for 2–3 minutes until the corn starts browning. The flavors will really pop here!
Return the cooked chicken to the skillet. Add lime juice and water, letting it cook for a couple of minutes until the liquid reduces and coats everything beautifully.
Sprinkle the Mexican cheese blend all over the chicken and veggies. Pop the skillet under the broiler for 2–3 minutes, just until the cheese is melted and bubbly.
Top everything with chopped cilantro and those charred lime slices or wedges. You’re ready to dig in!