Preheat the oven to 400°F. In a small pot, cover the potatoes with water. Add a tablespoon of salt and bring to a simmer. Cook the potatoes until just barely tender when pierced with a knife tip, about 8 minutes. Remove and drain the potatoes.
In a heavy 12" oven proof sauté pan (cast iron is ideal), heat the UP EVOO over medium high heat. Add the fully drained and dry potatoes to the hot oil and sauté until they just begin to take on a golden hue. Add the shallot and roasted peppers to the potatoes. Continue cooking over medium-high flame for another 3 minutes until the shallots begin to take on a golden hue. Add the fresh thyme.
In a large bowl, crack the eggs and whisk with 2 teaspoons of salt and ground pepper to taste. Pour the eggs over the potatoes and vegetables in the pan. Place the entire pan in the oven for 15-20 minutes, or until the egg is fully set and the bottom of the frittata is golden brown. Cut the frittata in wedges and serve each slice sprinkled with thinly sliced scallions, a sprinkle of fresh thyme, and a dab of aioli, if desired.
In the bowl of a food processor or blender, add the egg yolks, lemon juice, salt, and garlic clove. Process until smooth. With the motor running, slowly add the olive oil, pouring in a thin stream until the mixture comes together forming an emulsion.
Makes 1 1/4 cups.