Prepare Chicken + Grill: Season chicken breasts with salt and pepper. Ensure grill grates are clean and heat grill to medium-high heat (approx. 450 degrees F.).
Grill Chicken: Place chicken breasts on direct heat (direct flame) and cook for 4-5 minutes per side. Move chicken away from the direct heat (direct flame) so that it is cooking on indirect heat (maintaining the same grill temp) and cook for an additional 3-5 minutes (you don't need to flip at this point because the chicken will cook as if it is in an oven) or until the internal temperature of the thickest part of the chicken reads 160 degrees F. on your meat thermometer.
Sauce + Rest: Brush BBQ sauce on to the chicken and close the grill lid. Remove from grill when the internal temperature reaches 160 degrees F. and let rest at least 5 minutes, so the juices can redistribute (the chicken will continue to cook during this time and the internal temp will continue to rise 5 additional degrees). Cut chicken into bite-sized cubes.
Assemble Salad: Divide lettuce between two bowls. Top with chicken, avocado, corn, bacon, cheese, tomatoes, onion, black beans, cilantro and tortilla strips.
Top Salad: Top salad with additional BBQ sauce, ranch dressing and jalapeño slices.
Storage: any leftovers can be stored in an airtight container in the fridge for up to 5 days. Just make sure you keep the chicken, dressing, and fresh ingredients in separate containers. This is also perfect for meal prep!