Preheat the oven to 400°F. Rub the 4 boneless skinless chicken breasts with the spice mix ( ½ teaspoon garlic powder, 1 teaspoon onion powder, ½ teaspoon cayenne pepper, and ½ teaspoon kosher salt) and half the 2 tablespoons olive oil.
Heat the remaining oil in an oven-safe skillet over medium heat, then sear the chicken for 3-4 minutes per side until golden. Set the chicken aside.
With the skillet still over medium heat, add the 15 ounces diced tomatoes, 15 ounces black beans, 8 ounces roasted peppers, and 1 cup corn.
Stir the veggies and beans so the flavors start to meld in the skillet.
Sprinkle half of the 1 cup Tex-Mex cheese blend over the veggie mixture. Cook for a couple of minutes to let it begin to melt.
When the sauce starts bubbling, nestle the seared chicken into the skillet and top with the remaining cheese. Transfer to the oven and bake for 15 minutes, or until the chicken reaches 165°F and the cheese is melted and bubbly.
Top with fresh 2-3 green onions (diced) and chopped ½ bunch cilantro. Serve hot, right from the skillet.
Notes
Pat chicken dry for the best golden sear.
Drain canned veggies well to keep the sauce rich.
Add cheese in two layers for extra gooey bites.
Nestle chicken in the sauce so it stays juicy.
Storage
Fridge: Store in an airtight container up to 4 days.
Freezer: Freeze up to 3 months; thaw overnight in fridge.