Spaghetti Squash & Chicken with Avocado Pesto Ingredients: – 1 (2½ pound) 2½- to 3-pound spaghetti squash, halved lengthwise and seeded – 1 ripe avocado – 1 cup packed basil leaves – ¼ cup unsalted shelled pistachios (optional) – 2 tablespoons lemon juice – 1 clove garlic – ¾ teaspoon salt, divided – ½ teaspoon [...]