Chicken in Easy Green Pumpkin Seed Sauce - Rick Bayless

Ingredients

• 6 (about 3 ¾ pounds total) bone-in, skin-on chicken breast halves
• 1 small white onion, sliced
• 4 garlic cloves, peeled and halved
• 1/2 teaspoon EACH dried marjoram and thyme
• 3 bay leaves
• Salt
• 1 1/4 cups (about 6 ounces) hulled untoasted pumpkin seeds (pepitas)
• 8 ounces (5 to 6 medium) tomatillos, husked, rinsed and roughly chopped
• 2 large romaine lettuce leaves, torn into large pieces
• Fresh hot green chile to taste taste (roughly 2 serranos or 1 jalapeño), stemmed and roughly chopped
• The leaves from a small sprig of fresh epazote, plus an additional sprig for garnish
• 1/2 cup loosely packed chopped cilantro, plus a few sprigs for garnish
• 1 1/2 tablespoons vegetable oil or olive oil
• 2 medium (about 12 ounces total) chayotes, peeled if you wish, pitted and cut into ½-inch cubes
• 2 medium (10 ounces total) zucchini, cut into ½-inch cubes