Let me guess! You changed the oil both times using Pennzoil.
Specs like that are mostly additive fallout. Most likely, usually occurs & sits at the bottom of the new jugs.
Shake the snots out of the new oil jug, before pouring. If it still occurs at every check, stand at the furthest distance from the front of the vehicle hood. It's going to blow sooner or later......lol
All kidding aside..... Everything is probably fine & dandy. Sleep well.