Warm a large skillet over medium heat. Add the olive oil and swirl to coat the bottom.
Add the chopped onion and a pinch of salt. Sauté for 3–4 minutes until it starts to soften and become translucent.
Push the onions to the side, add the ground chicken to the pan, and break it up with a spatula. Cook for about 5–6 minutes until no pink remains.
Stir in the minced garlic and cook for another 30 seconds until fragrant.
Sprinkle in the taco seasoning, cumin, paprika, salt, and pepper. Stir well to coat the meat and onions. Cook for 1–2 minutes to let the spices bloom.
Taste and adjust seasoning if needed. If you like it a bit spicier, add a pinch of chili powder or a few chopped jalapeños.
Meanwhile, warm the tortillas in a dry skillet for about 20–30 seconds per side, or wrap them in a damp towel and microwave for 15–20 seconds until pliable.
Assemble: layer a tortilla with a generous scoop of seasoned ground chicken. Top with lettuce, tomatoes, cheese, and any extras you enjoy. A squeeze of lime and a dollop of sour cream or yogurt can brighten the dish.
Repeat with the remaining tortillas and filling. Serve immediately while warm and flavorful.