Heat olive oil in a sauce pan over medium heat.

Add chicken and spices (chili powder through salt and pepper) to the pan.

Cook the chicken, stirring occasionally, until fully cooked through (about 5 minutes per side, until juices run clear).

Remove the cooked chicken from the heat and set aside.

Chop the tomatoes, cucumbers, and avocado into small pieces.

In a medium bowl, combine the chopped tomatoes, avocado, and cucumber.

Squeeze lime juice over the mixture.

Mix thoroughly and add salt and pepper to taste.

Heat the corn tortillas in the microwave for 30 seconds to 1 minute.

Alternatively, heat the tortillas on a grill.

Place the cooked chicken and shredded cheddar cheese on the heated tortillas.

Top with the tomato, cucumber, and avocado salsa.

Add sour cream and additional salt and pepper to taste.

Garnish with limes and fresh cilantro.

Serve and enjoy!