How to Make It
In a large pot of boiling salted water, blanch the chard leaves until bright green, 1 minute. Drain the leaves and rinse under cold water. Drain again and carefully pat the leaves dry with paper towels.
In a heatproof medium bowl, cover the bulgur with the boiling water. Cover and let stand until the water has been absorbed and the bulgur is tender, about 15 minutes.
In a skillet, heat the 3 tablespoons of oil. Add the onion and cook over moderate heat until translucent, 4 minutes. Add the peppers and cook until softened, 5 minutes. Stir in the red pepper paste. Add the diced tomato and cook until sizzling, 1 minute. Remove from the heat. Stir in the bulgur, herbs and lemon juice and season with salt and pepper.
Spread a chard leaf out on a work surface; overlap the leaf to fill the space where the rib was. Mound 3 tablespoons of the filling on the lower third of the leaf. Bring the lower end of the leaf up and over the filling and roll up tightly, folding in the sides as you go. Repeat with the remaining chard leaves and filling. Arrange the stuffed leaves on a platter. Drizzle with oil, season with salt and serve.
Turkish red pepper paste, also known as biber salcasi, is available at specialty stores.