Combine tomato sauce, chiles, green pepper, green onion and hot pepper sauce in bowl; let stand 15 minutes.

 

Place tortilla chips in shallow 8" x 10" baking dish. Pour sauce over chips; sprinkle grated cheese over all. Broil nachos 3 minutes or until cheese melts.

 

Just before serving, seed, peel and mash avocado. Stir in lemon juice. Spoon avocado mixture and sour cream on hot nachos and top with jalapeno slices. Serve immediately.