Heat the olive oil in the instant pot on the sauté setting
Add the onion, garlic, and lemon juice to the pot and cook for about 1 minute
Add the chicken to the instant pot and sprinkle with garlic powder, paprika, salt, and pepper
Cook until browned on the outside, flipping at least once (2-3 minutes per side)
Pour in the chicken broth and add the Italian seasoning
Place the lid on the instant pot and set it to the poultry setting for 9 minutes (Note: if your chicken was frozen, this may take an extra few minutes)
Manually release the pressure
Remove the chicken and serve topped with the sauce from the instant pot and garnish with a lemon slice