Whisk buttermilk with a pinch of salt and pepper. Add chicken thighs and marinate for 30 minutes.
In a separate bowl mix flour, cornstarch, paprika, garlic powder, onion powder, chili powder, salt, and pepper. Dredge marinated chicken in seasoned flour until fully coated.
Heat vegetable oil in a deep pan to 350 degrees Fahrenheit. Fry chicken pieces until golden and cooked through, about 4 to 6 minutes per piece. Drain on rack.
In a small bowl, mix mayonnaise, lime juice, and cotija cheese to make elote-inspired sauce. Set aside.
Warm tortillas, slice fried chicken, and top with corn mixture and elote sauce. Garnish with cilantro and extra cotija if desired.
Notes
Smoky, crunchy, and tangy with a hint of lime to brighten the flavors.