Add Veggies, Chicken, and Seasoning: Add celery, carrots, potatoes, zucchini, and squash to the Instant Pot. Stir to combine. Add chicken breasts on top of the vegetables. In a small bowl whisk together the thyme, rosemary, tarragon, paprika, salt, and pepper. Add seasoning ingredients to the Instant Pot.
4 stalks celery, ¾ lb. carrots, 1 lb. red potatoes, 1 zucchini, 1 yellow squash, 1 lb. chicken breasts, ½ tsp. thyme, ½ tsp. rosemary, ½ tsp. tarragon, ¼ tsp. paprika, ½ - 1 ½ tsp. salt, ¼ tsp. black pepper