Fajitas on square plate, sour cream in a bowl, salsa in a bowl, cheese in a bowl, and avocado sliced in a bowl.
Chicken, Dinner, Mexican

Sheet Pan Fajitas

September 20, 2025 Leave a comment

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Tacos – one of humanity’s greatest foods! I love all forms and create all different kinds. One of my favorite creations is this weeknight sheet pan fajitas recipe. It is super simple, quick, and tasty! It utilizes already-cooked chicken and black beans; you can use either canned or freshly cooked. Typically, I use canned, as I am always trying to prepare a healthy meal for my family quickly. 

I remember the first time I had fajitas…..it was at Apple Bee’s as a starving teenager, and it was brought out on a sizzling plate; I will never forget it when they brought it to me. The sounds, the smells, and how delicious it was. Maybe it was because I was so surprised by the sounds it was making when placed in front of me or how hungry I was as a teenager, but that moment stays with me. I became somewhat obsessed with fajitas and would order them everywhere! I guess this recipe stems from that experience. 

    Julienned red onion, yellow, and red bell pepper on a sheet tray        

Tips & Tricks

  • Julienne your vegetables – cut into long, thin, uniform strips
  • Add the chicken and black beans to the sheet pan right after the vegetables have started to brown. I have accidentally let the vegetables go too long and they ended up crunchy.
  • Add a tiny bit more olive oil to the sheet pan when you add the shredded chicken and black beans, if needed 
  • Use tongs to mix everything.

Equipment:

  • Sheet pan
  • Can opener
  • Knife
  • Cutting board
  • Tongs 
  • Tortilla warmer/folded towel

 

Fajitas on square plate, sour cream in a bowl, salsa in a bowl, cheese in a bowl, and avocado sliced in a bowl.

Two flour tacos sitting on a orange/white plate filled with roasted bell pepper, red onions, chicken, and black beans. Topped with sour cream and avocado.

Sheet Pan Fajitas

Simple weeknight fajitas recipe
Print Recipe Pin Recipe
Prep Time 20 days
Cook Time 25 days
Course: dinner
Cuisine: American, Mexican
Ingredients Method

Ingredients
  

  • 2 tbsp olive oil
  • 1 red bell pepper (julienned)
  • 1 yellow bell pepper (julienned)
  • 1 (medium) red onion (julienned)
  • 1 packet taco or fajita seasoning (whatever brand you prefer)
  • 1 Rotisserie chicken (shredded)
  • 1 can black beans (strained and rinsed)
  • Flour tortillas
Accoutrements
  • Sour cream
  • Avocado (sliced)
  • Tomato (cubed)
  • Salsa
  • Cilantro (chopped)
  • Cheese (shredded/grated)

Method
 

  1. Preheat the oven to 375 degrees F
  2. Slice the red onion, and bell pepper into strips. Place all of the vegetables onto your sheet pan. Mix with your olive oil and taco/fajita seasoning mix.
  3. Place the sheet pan on the middle rack and roast for about 15-20 minutes. Once the vegetables have started to caramelize a little bit (brown slightly on the outsides), add the shredded chicken and black beans, mix into the mixture. Cook for another 5-10 minutes to thoroughly heat the chicken and beans.
  4. Remove from the oven and let cool. Heat your tortillas and gather all your accoutrements - sour cream, avocado, salsa, cilantro, etc. Heat those tortillas and enjoy!