How To Cook Griddled Chicken Fajitas

See how to make the most delicious chicken fajitas on griddle grills like the Traeger Flatrock (gifted) with onions and peppers griddled at the same time. Let’s get to this tasty flattop recipe…

Special thanks to Traeger Grills for providing Sip Bite Go with the griddle to make the Flatrock grill review. All opinions are my own. 

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Why griddle cooking chicken fajitas is so good

• The easy homemade fajita seasoning adds yummy flavor.
• Griddled chicken cooks perfectly and quickly.
• Griddle onions and peppers to your liking.
• Make a whole meal on the griddle for an epic dinner!

New to cooking on the griddle outside? 

Scroll to the bottom of this post for step-by-step video instructions.

Ingredients

Here’s what you need to make tasty griddled chicken fajitas with all the accompaniments.

For the griddled fajita onions and peppers

• 2 peppers, sliced in strips
• 2 onions, sliced in strips
• 1 tbsp avocado oil (substitute butter)
• ¼ tsp salt
• ¼ tsp pepper

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For the griddled chicken fajitas

• 2 lbs chicken breast, sliced or cubed
• 1 tbsp avocado oil (substitute butter)
• 2 tbsp fajita seasoning (see Sip Bite Go fajita seasoning recipe ingredients at the bottom of this page)

Side ideas to assemble griddle chicken fajita platter 

• 1 tbsp cilantro, fresh chopped
• 1 lime, wedges
• 1 large avocado, smashed
• ½ cup sour cream 
• ¼ cup cotija cheese 
• 2 cups Mexican rice
• 10 tortillas, flour or corn
• 6 corn on the cob, griddled

Homemade griddle chicken fajitas seasoning

• 1.5 tsp chili powder
• ½ tsp pepper, black 
• 1 tsp paprika
• ¼ tsp ground cumin
• 1 tsp garlic powder
• 1 tsp onion powder
• 1 tsp dried oregano
• ¼ tsp cayenne pepper
• 1.5 tsp salt
• 1.5 tsp sugar

See popular smoked food recipes on Sip Bite Go…  

How to make chicken fajitas on a griddle grill

Now I’ll walk you through it…

Quick look at recipe for griddle cooking chicken fajitas

1. Prep fajita seasoning (or use store bought). 
2. Season chicken breasts all over with fajita seasoning.
3. Preheat the flat top and start to griddle onions and peppers in one area.
4. Griddle fajita chicken breasts until cooked thoroughly.
5. Serve with cilantro, lime wedges, freshly smashed avocado, and any of your other favorite fajita sides like griddled corn on the cob or smoked corn on the cob.

Detailed recipe steps

1. Prep fajita seasoning. Either mix together all the chicken fajita ingredients from the Sip Bite Go recipe listed on this recipe, or use store bought fajita mix. 
2. Prep fajita chicken breast meat by mixing it all over with fajita seasoning. We like to get in there and massage it into the chicken meat with our hands. Set seasoned fajita chicken in the fridge until it’s time to griddle fajitas.
3. Preheat Traeger Flatrock, Blackstone Grill, or whatever indoor griddle or outdoor flattop you’re using to medium-high heat.
   
   For this particular recipe, we like to heat all the burners and add specific ingredients to each section. The onions and peppers take up 1-2 burner areas, and the chicken breast takes up about 1 area. 

4. Start griddle cooking fajita vegetables first. To do this, add cooking oil or butter to coat the griddle and then drop the peppers and onions onto the heated griddle. Flip them around and season with salt and pepper.

5. Griddle peppers and onions until they are soft and translucent, ~15 minutes.
   
   Turn burner heat down to low when they are close to done (to keep the fajita veggies warm while you cook the chicken fajitas on another griddle burner).

6. Griddle chicken breast for fajitas. To do this, add cooking oil or butter to coat the griddle and then drop the chicken breast in a flat layer onto the heated griddle. We like to keep the griddle burner heat on medium-high to medium.
   
   Flip chicken around regularly so they don’t burn and so they sear all over. You can drizzle as needed with a little water or oil to prevent chicken from sticking to the griddle.
   
   Chicken is done griddle cooking when the internal temperature reached 160 degrees F as read with an internal read thermometer.

7. Finish your griddle chicken fajita platter with your favorite condiments and sides, and enjoy.

See this tasty griddled fajita platter with sides…

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Pro tip: One of my go-to tricks for perfectly cooked food every time is using the right BBQ meat thermometers.

Are you a foodie, too?

Hey home chef, hope that answers all your questions about making chicken fajitas on the griddle. 

Enjoy cooking and chat soon on Instagram / TikTok / YouTube.

– Jenna

Next, browse the Sip Bite Go recipe collection…