Heat a large cast-iron grill pan over medium-high heat. Add corn; cook, turning frequently, until charred on all sides, about 8 minutes. Let cool slightly; cut kernels off cobs, and place in a large bowl. Add tomatoes, arugula, bell peppers, cucumber, basil, feta, onion, mint, and thyme, tossing until combined.
In a small bowl, stir together oil, mustard, lime zest and juice, lemon juice, garlic, salt, and black pepper until combined. Add desired amount of dressing to corn mixture, tossing until combined.
Recipe by Paula Deen Magazine at https://pauladeenmagazine.com/grilled-corn-salad/