Shred rotisserie chicken (or use pre-shredded rotisserie chicken) and measure 2-1/2 cups. Warm BBQ sauce in the microwave (covered) 30 seconds. Add BBQ sauce to chicken; start with 1/2 cup and add the additional 3 tablespoons as needed. Gently toss with tongs until chicken is coated to your liking. (If shredded chicken isn’t being pulled hot/fresh from the bones, I like to warm it 30 seconds to a minute in the microwave.)
Halve avocado and use a spoon to scoop out the flesh into a medium bowl. Mash avocado with a fork, then add lime juice, salt, garlic powder, and pepper. Mash again to combine.
Generously spoon mashed avocado mixture (be generous here; it adds a delicious creaminess!) on one slice of toasted bread. Add a good-sized handful of mixed greens on the avocado and gently press. Scoop chicken on top and place the other slice of bread on top. Enjoy immediately!
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Notes
This recipe scales up or down easily, and total quantity really just depends how loaded you like the sandwich. I like a lot of avocado and BBQ chicken on each sandwich!Storage: Store the BBQ chicken and guac in separate airtight containers in the fridge. The chicken will last up to 3 days, while the guac is best within 1 day. Toast fresh bread when ready to assemble again.