Preheat oven to 350 degrees. As it heats, cut pitas into wedges, sprinkled with the garlic powder. Bake on a sheet pan for ~8 minutes or until crisp.
Place your favorite cast iron pan/large skillet over medium high heat with a bit of your favorite saute oil. Brown your meat, 6-7 minutes. When meat is about cooked, sprinkle on the coriander/cumin/pepper flake along with a bit of salt and pepper. Cook out for another minute.
As meat cooks and pitas bake, dice the tomatoes/cucumber/red pepper/red onion into nacho sized bites. Pro tip: lightly salt the onion and tomatoes to bring out their best qualities.
Once all is baked/cooked, assemble nachos. I don't think you need my help with this. Top with the torn mint leaves.