Add cooked barbecue chicken chunks: (Divide chicken breast into 2 slices. Spread chopped garlic, seasoning salt and pepper onto each slice. Sear in hot pan with canola oil until lightly browned. Turn off the heat and put the lid on. Let it continue to cook for 10 minutes. Cut in chunks. Pour on some barbecue sauce and the juices from the pan, stir)
Add chopped red onion and remaining ingredients. Add 50/50 mixture of shredded extra sharp and monterey jack cheeses
Place into a preheated 425˚ F oven for 20-25 minutes or until golden and bubbly.