Add chicken thighs to a large bowl. Coat with 2 Tbsp avocado oil and season with 1 Tbsp chili powder, 1 tsp salt, ½ tsp black pepper, 1 tsp onion powder, 1 tsp garlic powder, 1 tsp smoked paprika, 1 tsp oregano, 1 tsp cumin, ½ tsp cayenne pepper, and ¼ tsp sugar. Marinate for 30 minutes.
Set up your smoker or grill to 350°F.
Coat corn and poblanos with 2 Tbsp avocado oil and season with ½ tsp salt, ½ tsp pepper, ½ tsp garlic powder, ½ tsp onion powder, ½ tsp smoked paprika, and ½ tsp cayenne pepper. Smoke for 10-20 minutes, flipping halfway through until nicely charred.
After removing corn and poblanos, grill chicken at 350°F for 15-20 minutes, flipping halfway through, until it reaches an internal temperature of 165°F.
Cut the corn off the cob. Peel, deseed, and destem the poblanos. Roughly diced poblanos and add to a large bowl with the remaining salad ingredients.
Let the grilled chicken rest for 5 minutes, then dice.
Grill flour tortillas until lightly charred.
Build your fajitas with the diced chicken and corn salad. Enjoy!