Preheat your oven to high in broil mode
Add cooking spray (or olive oil) to sheet pan
Separately boil the potatoes with salt for 20 minutes
In a large bowl, combine 2 cloves of garlic, the olive oil, the cumin, the oregano, and salt and pepper. Mix well and add broccoli, the onion, the red pepper, and boiled potatoes and then add to the sheet pan.
Season the flank steak with pepper, salt and the rest of the garlic, and cut into thin slices and add to the sheet pan.
cook in the broiler for 5-7 minutes and then flip the meat and continue cooking on broil 5-7 more minutes until cooked to your desired level of doneness.