Cut the chicken breasts into 1-inch pieces and season lightly with salt and pepper.
In a small bowl, whisk together the honey, soy sauce, water, lemon juice, and minced garlic until combined.
If making rice, start it now according to package instructions so it finishes with the chicken.
Set the Instant Pot to Sauté, add the olive oil, then add the chicken and cook, stirring often, about 3 minutes to brown the pieces slightly.
Pour the honey-garlic mixture over the chicken and stir to combine. Close the lid, set the valve to sealing, and cook on High pressure for 5 minutes (allow time for the pot to come to pressure).
When the cook time ends, perform a quick release of the pressure following the manufacturer's instructions, then open the lid.
Set the Instant Pot to Sauté again. In a small bowl, mix the cornstarch with 2 tablespoons cold water to make a slurry, then stir it into the pot.
Cook, stirring, for a few minutes until the sauce thickens to your liking; taste and adjust seasoning with salt and pepper.
Serve the honey garlic chicken over rice and garnish with chopped chives or parsley if desired.