Add the ground beef to a large skillet over medium heat and cook, stirring often, until meat is cooked through and in small pieces. Drain grease.

Add the chiles, taco seasoning, and water to the pan and stir well. Cook over low heat for 5 minutes.

While the meat is cooking, add the vegetable oil to a 10 inch skillet over medium heat. 

Add the tortillas, one at a time, and fry on each side until golden brown, about 30 seconds per side. 

Drain the tortillas on a paper towel lined plate. 

Add half of the tortillas in a single layer on a cookie sheet. 

Divide the meat mixture and spoon evenly over each tortilla. Top with the remaining tortillas.

Spread 1 tablespoon of taco sauce over the top of each tortilla. 

Mix the cheddar and Monterey jack together and sprinkle evenly over each tortilla. 

Place the pan under the broiler until the cheese has melted, about 3 minutes. 

Remove from the oven and top with tomatoes, green onions, jalapenos, and avocado as desired. 

Cut each pizza into 4 pieces and serve immediately.