In a large bowl, combine olive oil, lemon juice, minced garlic, oregano, paprika, cumin, salt and pepper. Whisk thoroughly until well blended.

Slice chicken breasts into thin strips and add them to the marinade. Ensure each piece is coated, cover, and refrigerate for at least 30 minutes.

Heat a skillet over medium-high heat. Add the marinated chicken in a single layer and cook for 6-8 minutes until fully cooked.

Warm tortillas in a dry skillet or microwave for about 30 seconds until soft.

Arrange warm tortillas on a platter and add cooked chicken strips to the center of each tortilla.

Sprinkle added toppings like feta, cherry tomatoes, cucumber, onion, parsley, and olives over chicken.

Drizzle tzatziki sauce over the assembled tacos to finish.