Combine the pickle juice and buttermilk in a bowl, then submerge the chicken tenders completely. Cover and refrigerate for at least 2 hours, though I always try to let mine sit overnight. The longer soak gives the chicken a noticeably tangier flavor and a much more tender bite.
In one bowl, whisk together the flour, cornstarch, garlic powder, paprika, salt, onion powder, pepper, and cayenne. In a second bowl, stir the buttermilk and hot sauce together. Spoon a little of the wet mixture into the dry mixture and stir gently to form small crumbly clusters, which helps the coating turn extra crunchy once fried.
Pat each chicken tender dry, then dredge it in the flour mixture, dip it into the buttermilk mixture, and coat it in the flour mixture again. Press gently so the coating sticks well. Let the coated chicken rest for a few minutes so the crust firms up slightly before frying.
Heat oil in a cast iron skillet or deep fryer to 350°F. Fry the chicken in small batches of three or four pieces so the oil temperature stays steady. Cook until deep golden brown and the internal temperature reaches 165°F, flipping occasionally for even color.
Add a little oil to a skillet over medium-low heat. Cook the tortillas one or two at a time for about a minute per side, until they're lightly golden but still soft enough to fold. Set them on paper towels to soak up any extra oil.
Place one crispy chicken tender in each tortilla, then top with a generous scoop of street corn salad and a drizzle of jalapeno lime ranch