Add all the marinade ingredients, except the bay leaves, in a 1-cup measuring cup. Using a wire whisk, blend all the ingredients very well.
If the chicken breasts are thicker than 1 ¼”, carefully flatten the chicken breasts to 1" to 1 1/4" thickness. You can do this by placing the chicken in another sealable bag or between plastic wrap and gently pound with a meat mallet or pressing with the palm of your hand. Do not use a drinking glass or plate or something that can break and harm your hand.
Place the chicken breasts, marinade and bay leaves in a sealable bag and marinate for at least 30 minutes up to 8 hours. (Place the bag in a refrigerator if marinating for more than 30 minutes.)
After marinating time is up, begin making the Pesto Risotto. In a pressure cooker over medium heat, add the oil and butter.
Once the fats are warmed, add the shallot and stir constantly for 1 minute. Add the garlic and cook for 30 seconds, stirring constantly.
Add the rice and stir continually until the rice becomes opaque. Be watchful of the shallot browning too much. Lower your heat if necessary.
Slowly add the chicken stock and stir.
Lock the lid onto your pressure cooker and raise the heat to high and allow it to come to pressure.
Once the indicator has alerted you that the cooker is now up to pressure, set a timer for 7 minutes. Now that the pressure cooker will sit and do its thing, start cooking the chicken breasts. See Step 13.
After the 7 minutes, do a quick release for the pressure cooker. Once the indicator has alerted you that it is safe to open, open the lid away from you.
Stir the risotto. Add the Parmesan cheese and pesto and stir to combine all together. If the risotto needs more time or liquid, you may add more stock and continue to cook on the stovetop.
Taste for seasoning, adding salt as needed.
For the chicken, heat a grill pan or skillet over medium heat. (I like my cast iron Lodge grill pan.) Add ½ tablespoon of oil in the pan.
Remove the chicken from the bag and allow the excess marinade to drip off and into the bag. If any pieces of the bay leaves are sticking to the meat, pull those off and discard. Discard the marinade.
Pat the chicken breasts dry with paper towels. Cook the chicken approximately 5 minutes per side, or until a probe thermometer inserted into the thickest part of the chicken reads 165 degrees. Remove the chicken from the pan and set aside partially covered to keep warm.
To serve individually, portion the risotto into 4 bowls. Slice each chicken breast into slices and fan one breast over each bowl of risotto.
Serve immediately.