In a small bowl, stir together butter, Parmesan cheese, garlic powder, Italian seasoning, and red pepper flakes.
If you want a crunchier Texas toast, stick the bread slices in a toaster to get them lightly toasted before proceeding with the recipe. For softer bread, you can skip this step.
Brush butter mixture in one side of bread slices.
Sprinkle mozzarella cheese on each piece and cover it with a slice of provolone cheese.To prevent the mozzarella cheese from blowing off, secure with a toothpick.
Fit 2 to 4 pieces of bread in the air fryer, depending on how many you can fit.Air fry at 350 degrees for 4 to 5 minutes.Repeat with remaining bread slices.