Place the lentils, Mesa de Vida sauce, diced tomatoes and their juices, and salt to taste into the electric pressure cooker; stir to combine.
Season the chicken inside and out with salt and pepper, then nestle into the lentil mixture. Cover, secure lid, and set the valve to “sealing”.
Set the manual cook time for 24 minutes on high. Once the cook time is finished (it can take some time for the pot to come up to pressure, total time will be around 45 minutes), let the pressure naturally release, about another 10-15 minutes. (SEE NOTES)
Carefully remove the chicken and cut into serving-size pieces. *Optional step if you're serving the chicken with the skin on: If you want crispy chicken skin, place the chicken pieces under the broiler, or in an air fryer, for a few minutes to crisp up.
Stir the lentil stew mixture. Serve with the chicken.