Preheat oven to whatever the temp. is for pizza crust.Spread a layer of refried beans all over.Sprinkle with taco seasoning.Add a layer of refried black beans.Sprinkle more taco seasoning.Next add the diced tomatoes.Sprinkle the grated cheese on, and add more taco seasoning.Now crumble the tortilla chips all over. I added this, cuz I like the crunch.Pop it in the oven for about 5-10 min. or until cheese has melted.Once you take it out, slice and add salsa.