Coat the chicken in oil and then sprinkle with taco seasoning and salt and pepper. Roll around so it's completely and evenly coated. Let sit while you preheat the grill to medium.
Squeeze fresh lime juice on the corn.
Make the sauce for the corn by mixing all the ingredients in a bowl.
Prepare any other toppings.
Grill the chicken over medium, for about 9-10 minutes, flipping once until 165°F internally. Grill the corn with the chicken.
Let sit 10 minutes, then cut into slices.
Slice the corn off the cob and mix it with most of the sauce, saving some to drizzle on the tacos.
For the Tacos:
Spread the sauce down the middle of each tortilla. Lay a few slices of the chicken on top, then the corn, pickled red onions and some cilantro. Or use other toppings if you like.