For the roasted veggies. Position a rack in the center of the oven and preheat the oven to 400ºF. In a large bowl, combine the red peppers, sweet peppers, red onions, and toss in the thyme, coriander, cumin, salt and pepper, along with the olive oil. Toss to coat. Spread out on a baking sheet and allow vegetables to roast for 30-35 minutes stirring every 10 minutes. The veggies should be soft but not chard. Remove from the oven and mix in half of the parsley and all of the cilantro. Turn up the oven temperature to 425ºF.
Assembling the galettes. Prick the squares of puff pastry with a fork and place them on a silicone or parchment lined baking sheet. I could fit all 6 on one sheet, if you can't, use 2 baking sheets. Brush the puff pastry with the beaten egg mixture. Spread 1/2 a tablespoon of sour cream on each square. Top with 1/6 of the pepper mixture on top of sour cream, leaving a small gap near the border so the edges can rise, also leave a well in the center for the egg later on.
Bake the galettes for 14 minutes. Crack an egg into the well in the center of each galette and return to the oven to cook for 5-7 minutes or until the eggs are set. For slightly runnier eggs, bake for 5. Sprinkle with additional salt and pepper along with remaining parsley. Serve immediately drizzled with a little additional olive oil, if desired.