Prep ingredients: Preheat oven to 425°F with a rack in the upper third. Squeeze 1 tablespoon lime juice, then cut remaining lime into wedges. Peel and finely chop 1 large garlic clove. Pound chicken to an even 1⁄2-inch thickness, if necessary. Season chicken with a pinch each salt and pepper. Generously brush tortillas with oil, then season on both sides with salt and pepper.
Bake taco bowls: Use 2 (14-inch) sheets aluminum foil. Form each sheet into a loose 4-inch ball. Place foil balls on rimmed baking sheet, then top with tortillas, pressing edges down around the balls. Bake until lightly browned and just crisp, about 5 minutes. Carefully flip tortilla bowls; discard foil. Return to oven until lightly brown in spots, about 1 minute.
Make lime-garlic sauce: In large bowl, combine 1 teaspoon each lime juice and oil, 1⁄2 teaspoon salt, 1⁄2 teaspoon garlic, and a few grinds pepper.
Prep salad: Reserve a few whole cilantro leaves for garnish, then finely chop remaining cilantro leaves and stems. Halve lettuce lengthwise, then thinly slice one half crosswise, discarding stem (save rest for own use). Thinly slice radishes. In a small bowl, whisk chipotle mayo with 1–2 teaspoons water to make a spoonable sauce.
Cook chicken & corn: Heat 1 tablespoon oil in a medium skillet over medium-high. Add chicken, cook until golden-brown, 2–3 minutes. Flip chicken; add corn, remaining garlic, and 1⁄4 cup water. Cover; cook chicken, 2–3 minutes, or until cooked through. Transfer chicken to lime-garlic sauce, turning to coat. Cook corn until water evaporates, 1–2 minutes. Season with salt and pepper.
Assemble salad & serve: In a large bowl, toss lettuce, radishes, and half the cilantro with remaining lime juice and 2 tablespoons oil. Season to taste with salt and pepper. Serve salad in tortilla bowls. Top with chicken lime-garlic sauce, corn, then a drizzle of the chipotle mayo and garnish with whole cilantro leaves. Serve remaining mayo and lime wedges on the side. Enjoy!