In a small mixing bowl, whisk the cumin, thyme, and paprika
Coat the chicken breasts with the seasoning mixture
Heat 2 tbsp of olive oil in a medium skillet over medium-high heat and add the chicken, cooking 5-7 minutes, until the outside is brown and crispy (the inside may not be cooked through yet)
Remove the chicken from the pan and reduce the heat to medium
Add the green beans, yellow onion, and 1/2 tsp of salt
Cook for about 3-5 minutes, until the onions start to soften
Return the chicken to the pan and add 1 cup of chicken broth
Bring to a boil then reduce the heat
Simmer, uncovered, for about 6-8 minutes until the chicken is cooked through
Use tongs or a slotted spoon to transfer the chicken and green beans to a plate and cover to keep warm
Whisk the remaining 1/4 cup of chicken broth, tahini, and lemon juice into the skillet
Add 1/2 tsp of salt and pepper to the pan, stirring to combine
Return the chicken and vegetables to the pan and turn to coat in the liquid