The same honest framework from this week's vanilla post applies here — sugar, additives and calories, checked against the actual panel rather than assumed. Chocolate adds one more specific question worth addressing directly: real cocoa versus artificial chocolate flavouring.
Real cocoa vs artificial chocolate flavouring

Real cocoa contributes genuine chocolate depth and a small amount of naturally occurring compounds cocoa is known for, alongside its flavour contribution. Artificial chocolate flavouring can approximate the taste at a lower cost but generally produces a flatter, less complex result — and doesn't carry any of cocoa's other naturally occurring characteristics.
Sugar content, honestly

As with vanilla, chocolate flavouring needs some sweetness to taste genuinely good rather than bitter from the cocoa alone. Check the actual sugar-per-serve figure on the panel and compare it fairly against other flavoured protein products in the category, not against an unflavoured isolate.
What GC Proteins Chocolate uses

• Real cocoa depth rather than a single artificial chocolate note, formulated to work with the pea, rice and faba bean base (see Week 1's taste posts).
• The same No Artificial Colors/Flavours standard that applies across all three GC Proteins flavours.
• A protein-per-serve figure and full nutrition panel printed clearly on every pouch — check it, don't assume it.
The honest verdict

A well-formulated chocolate protein powder using real cocoa is a reasonable, genuinely enjoyable addition to most balanced diets — check your own panel for the specifics that matter to you, the same advice that applies across every flavour and every brand in this category.
This article is general nutrition information, not medical advice. Protein, sugar and label figures reflect GC Proteins' published nutrition panel; always check the pack in front of you, since formulations can be updated. Speak with a doctor or accredited dietitian about your individual protein needs.