Old fashioned split pea soup with ham hock

Ingredients

• 2 tbsp. extra virgin olive oil, divided
• 1 (1 lb.) smoked ham hock
• 1 medium yellow onion, chopped
• 2 medium leeks (white and pale green parts only), thinly sliced
• 2 large shallots, minced
• salt
• Freshly ground black pepper
• 1 lb. dried green split peas
• 8 c. low-sodium chicken broth
• 2 sprigs fresh thyme, plus more for garnish
• 2 bay leaves