Instant Pot Split Pea Soup

Name: Instant Pot Split Pea Soup
Ingredients: 1/4 c. extra-virgin olive oil; 1 large leek, white and light green parts only, halved, washed well, and thinly sliced into half moons; 1 medium onion, finely chopped; 3 carrots, peeled and cut into thin rounds; 3 stalks celery, thinly sliced; 3 cloves garlic, minced; Kosher salt; Freshly ground black pepper; 1 1/2 c. dried green split peas (about 12 oz.); 4 oz. ham, diced (about 1 c.); 1 tbsp. fresh thyme, plus more for serving; 4 c. low-sodium chicken broth; 2 tbsp. Juice of 1/2 lemon, plus wedges for serving