Heat oven to 375°F / 190°C. Grease a 9×13 in (23×33 cm) dish.
Warm a skillet with oil. Add chicken, chili powder, cumin, paprika, ½ cup sauce, and salt. Stir 2–3 min. Add beans/corn if using.
Warm tortillas (skillet 20–30 sec/side or microwave 10–15 sec) so they bend.
Spoon a thin layer of sauce into the baking dish.
Fill each tortilla with chicken and a little cheese. Roll tight; place seam-side down.
Pour over the remaining sauce. Top with the rest of the cheese.
Bake 15–18 min until hot and bubbly. Broil 1–2 min to brown.
Rest 5 min. Serve with cilantro and lime (optional). Enjoy!