Preheat a grill to medium and lightly oil grates. Rub chicken with barbecue seasoning. Grill for 12 to 15 minutes, turning once, until cooked through. Remove from heat, cover with foil and set aside.Meanwhile, heat a medium skillet on medium. Cook bacon for 8 to 10 minutes, turning once, until browned and crisp. Set aside on paper towels.Preheat oven to 400ºF. In a single layer, arrange tortilla strips and mist with cooking spray. Bake for 6 to 7 minutes, until crisp and just beginning to brown. Remove from oven and set aside.In a small blender or food processor, blend garlic, avocado, cilantro, yogurt, lime juice, salt, pepper and 1/3 cup water until smooth.In a large bowl, toss together lettuce, tomatoes, cucumber, corn, onion, beans and cheese. Chop chicken into bite-size pieces and add to salad. Finely chop bacon and add to salad; toss. Divide salad among serving bowls and top evenly with dressing and tortilla strips. (Alternatively, arrange salad in layers in a glass jar as shown above, starting with dressing and keeping lighter ingredients such as lettuce toward top of jar.)