Preheat oven to 425 degrees and place a large cast iron skillet on the stove over medium high heat.
Add 1 tbsp avocado oil to the skillet to heat up. Season the chicken breast with the chicken seasoning and salt and pepper. Once the skillet is hot place the chicken breasts in the skillet and let sear for 5 minutes. After 5 minutes, flip the breasts and let sear for an additional 5 minutes.
While the chicken is searing, place the broccolini and potatoes in larger bowl and toss with 2 tbsp avocado oil and salt and pepper. Once chicken is seared on both sides, add the potatoes and broccolini to the cast iron skillet with the chicken breasts and place in over for 25 minutes. After 10 minutes of the chicken cooking in the oven, add the cherry tomatoes and continue cooking.
Dinner is served!
Recipe by Kiss by Brooke at https://www.kissbybrooke.com/2017/03/06/one-pan-chicken-dinner/