Bake your sweet potatoes in the oven at 400 degrees for about 30-35 minutes.
Place chicken breast, diced tomatoes, and taco seasoning in your Instant Pot. (Or into your crockpot for 7-8 hours on LOW)
Set Instant Pot on manual mode for 20 minutes. Once finished, release pressure and open lid. Remove chicken and shred. Place chicken back into Instant Pot and stir with the liquid in the pot.
While chicken and sweet potatoes are cooking, make your guacamole:
Combine smashed avocado, jalapeño, onion, cilantro, lime juice, garlic, sea salt, and pepper. Stir and smash together well.
Slit your sweet potatoes down the middle, top with the chicken mixture as shown, and then add about 2 Tablespoons of your fresh guacamole to each.
Garnish with chopped cilantro, jalapeño, and your favorite salsa.