If using fresh corn, grill the corn on medium-high heat until charred. Let it cool and then cut the kernels off the cob. If using canned, drain and rinse.
In a bowl, combine the mayonnaise, Greek yogurt, chili powder, smoked paprika, lime juice, salt, and pepper. Stir until smooth and well mixed.
In a large mixing bowl, add the shredded chicken, grilled corn, diced red bell pepper, chopped jalapeño, and red onion. Pour the dressing over the mixture and toss everything together until evenly coated.
Scoop the chicken and corn mixture into bowls. Top with crumbled feta cheese and garnish with chopped fresh cilantro.
Serve with tortilla chips on the side for added crunch.