To make in an instant pot: Place diced onion in the bottom of the instant pot. Place trivet over the onion and put seasoned chicken on top of trivet. Add 1 c water. Seal lid and select pressure cooker and 12 min. Make sure the pressure release valve is turned to sealing and not venting. When pressure cooker beeps, turn the pressure release valve to vent to release steam. Keep face and skin away from vent! Once steam is released, open the pressure cooker, press cancel, and remove the chicken to a cutting board and take trivet out of the instant pot. Add baby carrots (whole) and celery stalks (you may need to cut in half) into chicken broth in the instant pot, close lid, turn pressure release valve to sealing, and select pressure cooker and 3 min. While pressure cooker is coming to pressure and cooking, cut chicken into bite-sized pieces. When pressure cooker beeps, turn pressure release valve to “venting” to release steam. Once released, open lid, remove carrots and celery to cutting board and cut into pieces. push cancel on instant pot. Return chicken and vegetables to the instant pot with the broth. Turn instant pot to saute’. Add chicken broth (or water and chicken bullion/granules to equal 56 oz.), diced tomatoes, and spices. Combine ½ cup flour, and 1 c water to make a thin paste and add to pot. Simmer to thicken broth.