Heat the vegetable oil in a large skillet over medium-high heat.
Divide the ground chicken into 8 equal portions.
Season each portion with garlic powder, onion powder, paprika, salt, and pepper.
Place each portion into the hot skillet and immediately smash it flat using a sturdy spatula.
Cook for 3–4 minutes until the bottom develops a crispy golden crust.
Flip and cook another 3–4 minutes until the chicken reaches an internal temperature of 165°F (74°C).
Warm the corn tortillas according to package directions.
Place one crispy chicken patty onto each tortilla.
Top with shredded lettuce, dill pickle slices, cheddar cheese, ranch dressing, and a dollop of sour cream.
Serve your Crispy Dill Pickle Ranch Smash Chicken Tacos immediately while hot and crispy.