Ensure avocado is ripe; if an avocado is firm, ripen by placing in a paper bag, 1-2 days; slice avocado

Heat 1 tbsp oil in a skillet over med-high; pat chicken dry, then season with salt/pep + half of seasoning packet; cook 4-6 min per side until fully cooked, no pinkness remains; set aside + slice into strips

Thinly slice onion; heat 1 tbsp oil in same skillet; sauté onion 4-6 min until slightly charred + softened

Tear corner of rice to vent + heat in microwave 90 sec; stack 4 tortillas on a plate + wrap with a damp paper towel then microwave 15-30 sec or until warm + soft; divide chicken, avocado + onion to tortillas with rice on the side