Buttons and Bows Pasta

This light and lemon-y meal is a refreshing change to the same old pasta

2 C dry whole-wheat bowtie pasta (farfalle) (8 oz)
1 Tbsp olive oil
1 tsp garlic, minced (about 1 clove)
1 bag (16 oz) frozen peas and carrots
2 C low-sodium chicken broth
2 Tbsp cornstarch
1 Tbsp fresh parsley, rinsed, dried, and chopped (or 1 tsp dried)
1 medium lemon, rinsed, for 1 tsp zest (use a grater to take a thin layer of skin off the lemon)
¼ tsp ground black pepper