"Spray a large cast-iron skillet with cooking spray and heat on medium/high heat. Add chicken, onion, chili powder, and cumin and cook for 8 minutes or until chicken is done. Add black beans and cook 1 more minute while stirring and remove from heat.Lay tortilla flat, place 2 tablespoons cheese in center, then add 1/3 of the chicken mixture on top, then add 1 tablespoon of salsa, and 1 tablespoon Greek yogurt. Roll tortilla in a jelly roll fashion, squeezing sides to ensure filling doesn’t fall out. Place seam side down on counter, and repeat with next 2 tortillas.Heat a grill pan or clean skillet over medium/high heat and spray with cooking spray. Set tortillas into pan, seam side down. Cook for 3-4 minutes, until golden brown on bottom side, flip and continue cooking on that side until browned. Remove from skillet and place on a wire rack or plates to serve."