Add about 2 tablespoons of olive oil to a skillet and heat over medium heat. Add the potatoes, peppers and onions. Cook for about 5 minutes until the are tender and potatoes are slightly brown. Add the garlic and cook until tender.
Remove the vegetables from the pan. Add the other tablespoon of olive oil or more if needed. Add the shrimp and cook until they turn pink. Time will vary on the size of the shrimp.
Add the vegetables back into the skillet. Stir until all is mix well and vegetables are heated back up.
Season with salt and pepper to taste. Sprinkle the red pepper flakes over the mixture and stir in.